{"title":"Amplification","description":null,"products":[{"product_id":"dan-dagostino-pendulum-integrated-amplifier","title":"Dan D'Agostino Pendulum Integrated Amplifier","description":"\u003cp\u003e\u003cspan\u003eAt the heart of the Pendulum Integrated Amplifier lies the ingeniously re-engineered JFET input circuit topology, derived from the acclaimed Momentum C2 Preamplifier. This innovative technology upgrades the performance and precision of the entire platform, guaranteeing an immersive listening experience that transcends expectations from a component its size.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDriven by a custom toroidal transformer rated at 750VA and complemented by a nearly 25,000 μF capacitor bank, the Pendulum Integrated Amplifier delivers robust power output within a compact design. This advanced power supply ensures stable performance and minimizes distortion, allowing the amplifier to effortlessly drive challenging loudspeakers to their full potential. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSeamless integration with a variety of audio sources is key to the Pendulum’s versatility. Analog connections include one single-ended input for turntable use and three balanced inputs, one with theater pass-through. Balanced preamplifier outputs allow for effortless integration of subwoofer(s), providing maximum flexibility to tailor your sound experience. Additionally, an optional moving-coil phono module accommodates turntable playback, catering to vinyl enthusiasts with exceptional performance. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Pendulum Integrated Amplifier can be optionally equipped with a comprehensive suite of digital connections, ensuring seamless integration with modern audio sources and systems. Featuring optical and both RJ45 and Wi-Fi network connections, it offers unparalleled connectivity options. Notably, it is the first D’Agostino component to include an HDMI input with eARC functionality, simplifying integration into home entertainment systems. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower: 120W per channel into 8 ohms, 240W into 4 ohms\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20 Hz to 20 kHz, +\/- 0.1 dB\u003c\/li\u003e\n\u003cli\u003eTHD: 0.015% at 1 kHz, 120W per channel into 8 ohms\u003c\/li\u003e\n\u003cli\u003eInput impedance: 1 Mohm\u003c\/li\u003e\n\u003cli\u003eOutput impedance: 0.1 ohms\u003c\/li\u003e\n\u003cli\u003eAnalogue inputs: three balanced XLR pairs, one unbalanced RCA pair\u003c\/li\u003e\n\u003cli\u003eDigital inputs (optional): optical, Ethernet, Wi-Fi, HDMI eARC\u003c\/li\u003e\n\u003cli\u003ePhono (optional): 60 dB gain, loading at 47k, 1k, 500, 250, 100 and 50 ohms\u003c\/li\u003e\n\u003cli\u003eOutputs: one balanced XLR pair, 1\/4 inch headphone, two pairs of binding posts\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.0 x 4.65 x 14.0 in\u003c\/li\u003e\n\u003cli\u003eWeight: 35 lbs\u003c\/li\u003e\n\u003cli\u003eFinishes: silver or black\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dan D'Agostino","offers":[{"title":"Base","offer_id":53142141010237,"sku":"DAG-PEND-BASE","price":18000.0,"currency_code":"USD","in_stock":true},{"title":"With phono","offer_id":53142141043005,"sku":"DAG-PEND-PH","price":19500.0,"currency_code":"USD","in_stock":true},{"title":"With streaming module","offer_id":53142141075773,"sku":"DAG-PEND-DSM","price":21000.0,"currency_code":"USD","in_stock":true},{"title":"With phono and streaming","offer_id":53142141108541,"sku":"DAG-PEND-PHDSM","price":22500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/pendulum-black.png?v=1790308777"},{"product_id":"dan-dagostino-momentum-mxv-integrated-amplifier","title":"Dan D'Agostino Momentum MxV Integrated Amplifier","description":"\u003cp\u003e\u003cspan\u003eThe highly acclaimed Momentum MxV Integrated Amplifier achieves a level of performance never before accomplished in an integrated amplifier. Combining the front-end technology from the Momentum C2 Preamplifier and the power section of the Momentum MxV amplifier, it delivers Momentum Series performance in a compact framework only hinting at the advanced circuitry within.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eEvery section of the Momentum MxV Integrated Amplifier benefits from advancements pioneered in the Relentless and Momentum Series. In the preamplifier, six left and right circuit boards make up the input, volume control, and output sections. The advantage of an integrated amplifier is the direct connection of the preamplifier output stage to the amplifier input section, eliminating connector and cable anomalies that potentially impact electrical and sonic performance. Crucial to the circuit are bipolar transistors powering the front end of the amplifier that deliver 10 times the current and power of devices previously employed. These wider-bandwidth, higher-power components extend low- and high-frequency performance with reduced distortion. Energizing the driver stage is a new bias stability circuit providing a nearly 50% increase in operating bias. Increasing Class A operation directly correlates to better sound quality. A unique copper\/aluminum thermal engine heatsink and new bias scheme prevent excessive temperatures even under the greatest demand. Additional power transistors in the output stage reduce workload for each device, minimizing stress and allowing the entire output section to work more efficiently. \u003c\/p\u003e\n\u003cp\u003eThe final output stage features new output transistors sourced for the Relentless Monoblock amplifiers. A total of 28 high-speed, high-output transistors per channel are used, each mounted for maximum thermal transfer to the copper heat sinks. A capacitor\/resistor network connected to the base of each transistor ensures stability even at high frequencies and with low-impedance loudspeakers. As with all Dan D’Agostino Master Audio Systems components, the Momentum MxV Integrated Amplifier features discrete, direct-coupled, balanced circuitry, the most accurate circuit platform possible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower: 250W per channel into 8 ohms, 500W into 4 ohms, 1,000W into 2 ohms\u003c\/li\u003e\n\u003cli\u003eFrequency response: 0.1 Hz to 100 kHz, +0 \/ -3 dB; 20 Hz to 20 kHz, +\/- 0.1 dB\u003c\/li\u003e\n\u003cli\u003eTHD: 0.05% at 1 kHz, 250W per channel into 8 ohms\u003c\/li\u003e\n\u003cli\u003eSignal to noise: better than 75 dB A weighted, better than 100 dB unweighted\u003c\/li\u003e\n\u003cli\u003eInput impedance: 1 Mohm\u003c\/li\u003e\n\u003cli\u003eOutput impedance: 0.7 ohms\u003c\/li\u003e\n\u003cli\u003eAnalogue inputs: three balanced XLR pairs, one unbalanced RCA pair\u003c\/li\u003e\n\u003cli\u003eDigital inputs (optional): coaxial, optical, USB-B, Ethernet, Wi-Fi\u003c\/li\u003e\n\u003cli\u003eOutputs: one balanced XLR pair, 1\/4 inch headphone, two binding posts\u003c\/li\u003e\n\u003cli\u003eDimensions: 18.25 x 9.5 x 17.8 in\u003c\/li\u003e\n\u003cli\u003eWeight: 112 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dan D'Agostino","offers":[{"title":"Base","offer_id":53142141600061,"sku":"DAG-MOMINT-BASE","price":72500.0,"currency_code":"USD","in_stock":true},{"title":"With phono","offer_id":53142141632829,"sku":"DAG-MOMINT-PH","price":78500.0,"currency_code":"USD","in_stock":true},{"title":"With streaming module","offer_id":53142141665597,"sku":"DAG-MOMINT-DSM","price":85000.0,"currency_code":"USD","in_stock":true},{"title":"With phono and streaming","offer_id":53142141698365,"sku":"DAG-MOMINT-PHDSM","price":91000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/MI-Front.png?v=1790308597"},{"product_id":"dan-dagostino-momentum-s250-mxv-stereo-amplifier","title":"Dan D'Agostino Momentum S250 MxV Stereo Amplifier","description":"\u003cp\u003e\u003cspan\u003eDelivering the extraordinary sound quality of the Momentum M400 MxV Monoblock, the Momentum S250 MxV Stereo Amplifier features techniques and topologies developed and implemented in the Relentless Series. This fullest expression of the Momentum circuitry is reflected in the model’s name, MxV. Those with a physics background will recognize that MxV, or Mass times Velocity, is the equation for Momentum.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eEvery major section of the amplifier—power supply, input, driver, and output stages—has been enhanced. An improved transformer winding provides over 50% more current output from the same transformer footprint, offering greater headroom during dynamic passages. The input stage combines revised circuit topology with advanced components feeding the driver and output stages. Crucial to the new circuit are bipolar transistors powering the front end that deliver ten times the current and power of the originals. These wider bandwidth, higher-power components extend low- and high-frequency performance with reduced distortion at both frequency extremes. \u003c\/p\u003e\n\u003cp\u003eEnergizing the driver stage is a bias stability circuit providing a nearly 50% increase in operating bias. Increasing Class A operation directly correlates to better sound quality. However, there is a limit to bias level in any amplifier. With this new circuit topology and our unique copper heatsinks, thermal issues are not a practical concern, preventing excessive temperatures even under the greatest demand. Additional power transistors in the output stage reduce workload foreach device, so the entire output section works more efficiently. The result is a richer, more dynamic, and intimate presentation of the music. \u003c\/p\u003e\n\u003cp\u003eThe final output stage features 28 new high-output transistors originally sourced for the flagship Relentless Series amplifiers. Among the fastest available, these run at a blistering 69 MHz and permit the amplifier to achieve incredible bandwidth. Each transistor mounts with two stainless steel fasteners—a rarity among flat-package transistors—for maximum thermal transfer to the copper heatsinks. A capacitor\/resistor network connected to the base of each transistor ensures stability even at high frequencies and with low-impedance speakers. Additionally, every output transistor is measured, and only devices that match the required performance specifications are used. As with all D’Agostino models, the Momentum S250 MxV Stereo Amplifier features discrete, direct-coupled balanced circuitry, the most accurate circuit platform possible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower: 250W per channel into 8 ohms, 500W into 4 ohms, 1,000W into 2 ohms\u003c\/li\u003e\n\u003cli\u003eFrequency response: 1 Hz to 200 kHz, -1 dB; 20 Hz to 20 kHz, +\/- 0.1 dB\u003c\/li\u003e\n\u003cli\u003eTHD: 0.1% at 1 kHz, 250W per channel into 8 ohms\u003c\/li\u003e\n\u003cli\u003eSignal to noise: better than 75 dB A weighted, better than 105 dB unweighted\u003c\/li\u003e\n\u003cli\u003eGain: 27 dB\u003c\/li\u003e\n\u003cli\u003eInput impedance: 100k ohms\u003c\/li\u003e\n\u003cli\u003eOutput impedance: under 0.07 ohms, 20 Hz to 20 kHz\u003c\/li\u003e\n\u003cli\u003eOutput current: 120A peak\u003c\/li\u003e\n\u003cli\u003eDimensions: 12.5 x 5.25 x 21.5 in\u003c\/li\u003e\n\u003cli\u003eWeight: 95 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dan D'Agostino","offers":[{"title":"Default Title","offer_id":53142141763901,"sku":"DAG-MOM-S250","price":50000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/SilverS250Front-0.png?v=1790308469"},{"product_id":"dan-dagostino-momentum-m400-mxv-monoblock-amplifier","title":"Dan D'Agostino Momentum M400 MxV Monoblock Amplifier","description":"\u003cp\u003eOne iconic amplifier continues to lead, elevating Dan D’Agostino Master Audio Systems’ original amplifier design, while featuring techniques and topologies initially developed and implemented in the Relentless Series. This fullest expression of the Momentum circuitry is reflected in the model’s name, MxV. Those with a physics background will recognize that its name MxV, or Mass times Velocity, is the equation for Momentum.\u003c\/p\u003e\n\u003ch4\u003eAdvancements in Every Area\u003c\/h4\u003e\n\u003cp\u003eEvery major section of the amplifier—power supply, input, driver, and output stages—has been enhanced. An improved transformer winding provides over 50% more current output from the same transformer footprint, offering greater headroom during dynamic passages. The input stage combines revised circuit topology with advanced components feeding the driver and output stages. Crucial to the new circuit are bipolar transistors powering the front end that deliver ten times the current and power of the originals. These wider bandwidth, higher-power components extend low- and high-frequency performance with reduced distortion at both frequency extremes.\u003c\/p\u003e\n\u003cp\u003eEnergizing the driver stage is a bias stability circuit providing a nearly 50% increase in operating bias. Increasing Class A operation directly correlates to better sound quality. However, there is a limit to bias level in any amplifier. With this new circuit topology and unique copper heatsinks, thermal issues are not a practical concern, preventing excessive temperatures even under the greatest demand. Additional power transistors in the output stage reduce workload for each device, so the entire output section works more efficiently. The result is a richer, more dynamic, and intimate presentation of the music.\u003c\/p\u003e\n\u003cp\u003eThe final output stage features 28 new high-output transistors originally sourced for the flagship Relentless Series amplifiers. Among the fastest available, these run at a blistering 69 MHz and permit the amplifier to achieve incredible bandwidth. Each transistor mounts with two stainless steel fasteners—a rarity among flat-package transistors—for maximum thermal transfer to the copper heatsinks. A capacitor\/resistor network connected to the base of each transistor ensures stability even at high frequencies and with low-impedance speakers. Additionally, every output transistor is measured, and only devices that match the required performance specifications are used. As with all D’Agostino models, the Momentum M400 MxV Monoblock Amplifier features discrete, direct-coupled balanced circuitry, the most accurate circuit platform possible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower: 400W into 8 ohms, 800W into 4 ohms, 1,600W into 2 ohms\u003c\/li\u003e\n\u003cli\u003eFrequency response: 1 Hz to 200 kHz, -1 dB; 20 Hz to 20 kHz, +\/- 0.1 dB\u003c\/li\u003e\n\u003cli\u003eTHD: 0.09% at 1 kHz, 400W into 8 ohms\u003c\/li\u003e\n\u003cli\u003eSignal to noise: better than 85 dB A weighted, better than 115 dB unweighted\u003c\/li\u003e\n\u003cli\u003eGain: 27 dB\u003c\/li\u003e\n\u003cli\u003eInput impedance: 100k ohms\u003c\/li\u003e\n\u003cli\u003eOutput impedance: under 0.11 ohms\u003c\/li\u003e\n\u003cli\u003eOutput current: 40A peak\u003c\/li\u003e\n\u003cli\u003eDimensions: 12.5 x 5.25 x 21.5 in\u003c\/li\u003e\n\u003cli\u003eWeight: 95 lbs each\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dan D'Agostino","offers":[{"title":"Default Title","offer_id":53142141796669,"sku":"DAG-MOM-M400","price":90000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/DualM400Black-1.png?v=1790308437"},{"product_id":"dan-dagostino-momentum-z-monoblock-amplifier","title":"Dan D'Agostino Momentum Z Monoblock Amplifier","description":"\u003cp\u003e\u003cspan\u003eBorn from the same design philosophy that established the original Momentum series as a benchmark in high-end amplification, the Momentum Z generation advances every facet of the platform. Its unique power supply technology, the Kinetic Drive Regulator, keeps the amplifier immune to AC mains irregularities and the speaker interaction issues that commonly degrade the performance of conventional amplifier designs.\u003cbr\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIn addition to this proprietary innovation, every element of the Momentum Z has been reimagined, including the input stage topology, output stage circuitry, and an advanced software-based control system that optimizes the operation of every circuit group. Integrated within a newly refined thermal architecture, the Momentum Z delivers effortless dynamics, exceptional transparency, and a lifelike sense of musical scale.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower: 500W into 8 ohms, 1,000W into 4 ohms, 2,000W into 2 ohms\u003c\/li\u003e\n\u003cli\u003eFrequency response: 1 Hz to 200 kHz, -1 dB; 20 Hz to 20 kHz, +0.1 dB\u003c\/li\u003e\n\u003cli\u003eTHD: 0.02% at 1 kHz, 500W into 8 ohms\u003c\/li\u003e\n\u003cli\u003eSignal to noise: better than 75 dB A weighted, better than 115 dB unweighted\u003c\/li\u003e\n\u003cli\u003eGain: 27 dB\u003c\/li\u003e\n\u003cli\u003eInput impedance: 1 Mohm standard, 300 ohms in the Z setting\u003c\/li\u003e\n\u003cli\u003eOutput impedance: under 0.05 ohms\u003c\/li\u003e\n\u003cli\u003eOutput voltage: 190V peak to peak\u003c\/li\u003e\n\u003cli\u003eOutput current: 60A peak to peak\u003c\/li\u003e\n\u003cli\u003eDimensions: 13.5 x 5 x 20.5 in\u003c\/li\u003e\n\u003cli\u003eWeight: 100 lbs each\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dan D'Agostino","offers":[{"title":"Default Title","offer_id":53142141862205,"sku":"DAG-MOM-Z","price":125000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/DA-MomentumZ-1.jpg?v=1791341511"},{"product_id":"dan-dagostino-relentless-800-monoblock-amplifier","title":"Dan D'Agostino Relentless 800 Monoblock Amplifier","description":"\u003cp\u003e\u003cspan\u003eAfter setting the measure for amplifier excellence with the Relentless Epic 1600 Monoblock Amplifier, the Relentless 800 Monoblock Amplifier brings Relentless sound quality to smaller platform. Employing the same circuit topology as the Epic1600, its power supply, input, driver, and output stages have been engineered to distinguish it from its bigger brother only by lower power output.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eNuanced and musical at low volume levels, the Relentless 800 delivers the striking dynamic contrasts that bring music to life. The core of the power supply is a transformer using multiple sections running in concert, potted and encased in a metal shield, reducing transformer noise to near zero and protecting the audio circuitry from the transformer’s magnetic field.\u003c\/p\u003e\n\u003cp\u003eThe nearly four-kilowatt transformer and 400,000 μF capacitance power supply feed 84 output devices, allowing the Relentless 800 to easily deliver 800 watts into 8 ohms. When connected to a 220-volt outlet, output doubles to 1,600 watts into 4 ohms and 3,200 watts into 2 ohms\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower: 800W into 8 ohms, 1,600W into 4 ohms, 3,200W into 2 ohms\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20 Hz to 20 kHz, +\/- 0.1 dB\u003c\/li\u003e\n\u003cli\u003eTHD: 0.05% at 1 kHz, 800W into 8 ohms\u003c\/li\u003e\n\u003cli\u003eSignal to noise: better than 75 dB A weighted, better than 113 dB unweighted\u003c\/li\u003e\n\u003cli\u003eGain: 26.5 dB\u003c\/li\u003e\n\u003cli\u003eInput impedance: 100k ohms\u003c\/li\u003e\n\u003cli\u003eOutput impedance: under 0.03 ohms, 20 Hz to 20 kHz\u003c\/li\u003e\n\u003cli\u003eDamping factor: better than 195, referenced to 8 ohms\u003c\/li\u003e\n\u003cli\u003ePower consumption: 35W standby, 480W idle, 10 kW maximum\u003c\/li\u003e\n\u003cli\u003eDimensions: 21.6 x 10.4 x 26.0 in\u003c\/li\u003e\n\u003cli\u003eWeight: 320 lbs each\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dan D'Agostino","offers":[{"title":"Default Title","offer_id":53142141960509,"sku":"DAG-REL-800","price":225000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/R8001.png?v=1790308229"},{"product_id":"dan-dagostino-relentless-epic-1600-monoblock-amplifier","title":"Dan D'Agostino Relentless Epic 1600 Monoblock Amplifier","description":"\u003cp\u003e\u003cspan\u003eAfter setting the measure for amplifier excellence, the Relentless Monoblock Amplifier underwent a substantial upgrade combining new circuit sections and components to become the Epic 1600. Just as no audio designer has been more relentless than Dan D’Agostino in the pursuit of perfection, no power amplifier has been designed and built to a higher standard than the flagship of the Relentless family.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eA true balanced design—unlike conventional bridged amplifiers—it uses a single front-end topology, based on current mirror circuitry to derive the symmetrical plus and minus rails. Typical bridged amplifier designs use two front end circuits, making it virtually impossible to achieve perfect symmetry between the plus and minus rail. In the Epic 1600, distortion artifacts that appear on one half of the signal will also appear on the other half and thus cancel each other. This unique circuit configuration allows for awesome power output with strikingly low distortion. New input stage devices deliver a 300% increase in current as compared to the previous devices, extending low- and high-frequency performance, while truly impressive distortion figures result from the use of no global negative feedback. The amplifier’s open-loop linearity eliminates the need for this performance-robbing technique. Gain circuits operate in the current domain, assuring that performance does not fluctuate regardless of the current demand. \u003c\/p\u003e\n\u003cp\u003eWith its 5.5-kilowatt power supply feeding over 100 output devices, the Relentless Epic 1600 Monoblock Amplifier easily delivers 1,600 watts into 8 ohms—and when connected to a 220-volt or greater AC mains outlet ,it doubles its output to 3,200 watts into 4 ohms and 6,400 watts into 2 ohms. This power output is maintained with the same musical composure at full power as it is at 1 watt. \u003c\/p\u003e\n\u003cp\u003eCrucial to the new circuit are the bipolar transistors powering the front end of the amplifier. Activating the driver stage is a new bias stability circuit providing a nearly 50% increase in operating bias. Increasing Class A operation directly correlates to better sound quality. With this circuit topology and the unique copper\/aluminum heatsinks, thermal issues become irrelevant. The new bias scheme ensures bias consistency, preventing excessive temperatures even under the greatest demand. Additional regulation circuitry prevents any AC power anomalies from upsetting the amplifier’s input circuitry. The core of the power supply is a 5.5 KVA linear transformer that uses multiple sections running in concert, potted and encased in a metal shield. This design reduces transformer noise to nearly zero and protects the audio circuitry from the transformer’s magnetic field. The transformer feeds a custom-designed rectifier circuit and a600,000-microfarad\/100-volt capacitor bank. \u003c\/p\u003e\n\u003cp\u003eA custom-made Delrin brace mechanically grounds each capacitor to eliminate vibration. A slow-start circuit activates the power supply in stages, preventing capacitive inrush tripping household circuit breakers.\u003c\/p\u003e\n\u003cp\u003eA critical element of any amplifier output topology is the driver section. In the Epic 1600, the driver transistor has been upgraded to a device that handles 33% more power per device. Doubling the driver transistor count minimizes demand on each individual device and lowers overall amplifier output impedance without resorting to global negative feedback. Individual transistors are used for the positive and negative signal elements, nearly doubling the current drive necessary to maximize the enhanced output stage that follows. D’Agostino’s exclusive Super Rail concept makes maximum use of the incredible resources of this power supply. Super Rail employs higher voltage rails in the sections prior to the output stage, effectively “turbocharging” the amplifier. This voltage boost allows the musical signal to exploit the full capability of the output voltage rails. Extending the musical signal swing closer to the output rails maximizes the performance of the output circuitry design, improving dynamics, lowering distortion, and tightening the amplifier’s grip on the speaker. \u003c\/p\u003e\n\u003cp\u003eThe output stage features the same new transistor as in the driver section for sonic and technical consistency. Individual complementary pairs undergo our transistor matching protocol to ensure that gain linearity is virtually identical from 50mA to 5A. Additionally, every one of the 112 output transistors is measured, and only devices that match the required performance specifications are used. The high-output transistors are among the fastest available, and mount with two stainless steel fasteners—a rarity among flat-package transistors—for maximum thermal transfer to the copper heat sinks. 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Housed in a brand new case to match the rest of the Rega range, the MK4 builds on previous Rega designs using our multi-award winning class A\/B power amplifier circuit which delivers an impressive 72W per channel into 8Ω loads (90W into 6Ω). 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Its black glass and aluminum front panel is styled to visually integrate with McIntosh components going back to the 1950s, with a glass top panel showing the tube complement of one 12AT7 and five 12AX7A. 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Its DA2 Digital Audio Module uses a Quad Balanced, 8-channel, 32-bit DAC architecture supporting 24-bit\/192kHz PCM and DSD512, with USB, coaxial, optical, HDMI ARC and MCT inputs. An 8-band analogue equalizer and a High Drive headphone amplifier with HXD crossfeed round out the analogue side.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eType: solid state\u003c\/li\u003e\n\u003cli\u003eInputs: 16 total, 3 balanced, 4 unbalanced, 2 phono (MC\/MM), 2 coax, 2 optical, 1 USB, 1 MCT, 1 HDMI ARC\u003c\/li\u003e\n\u003cli\u003eOutputs: 3 balanced variable, 3 unbalanced variable, headphone 1\/4 inch HXD, processor loop\u003c\/li\u003e\n\u003cli\u003eTHD: 0.005%\u003c\/li\u003e\n\u003cli\u003ePhono: gain 40 to 64dB selectable in 6dB steps\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.5 in W x 7.625 in H x 16.5 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 28 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143937122621,"sku":"MAC-C55","price":10500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0013.webp?v=1790735384"},{"product_id":"mcintosh-ma2375-integrated-amplifier","title":"McIntosh MA2375 Integrated Amplifier","description":"\u003cp\u003eMcIntosh's first vacuum tube integrated amplifier in over a decade, an all-analogue design with no digital section. Four KT88 output tubes and four 12AT7 driver tubes drive the power section, with two 12AX7A and two 12AT7 tubes in the preamp stage. 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McIntosh Autoformers guarantee that full power regardless of whether the load is 2, 4 or 8 ohms, Power Guard prevents distortion and speaker damage from clipping, and the Sentry Monitor provides fuse-less, auto-resetting short-circuit protection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 300W per channel into 2, 4 or 8 ohms\u003c\/li\u003e\n\u003cli\u003eInputs: 2 balanced, 6 unbalanced, 1 phono MC plus 1 phono MM, plus DA2 digital module (2 coax, 2 optical, 1 USB DSD512, 1 MCT, 1 HDMI ARC)\u003c\/li\u003e\n\u003cli\u003eOutputs: balanced variable, unbalanced fixed and variable, headphone 1\/4 inch HXD\u003c\/li\u003e\n\u003cli\u003eTHD: 0.005%\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.5 in W x 9.44 in H x 19.75 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 101 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143937712445,"sku":"MAC-MA9500","price":14000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0017.webp?v=1790735751"},{"product_id":"mcintosh-ma352-integrated-amplifier","title":"McIntosh MA352 Integrated Amplifier","description":"\u003cp\u003eA hybrid integrated using Hybrid Drive technology, pairing a 12AX7A\/12AT7 vacuum tube preamp stage with a direct-coupled solid state output stage. The Power Guard circuit makes micro-adjustments to prevent clipping and speaker damage, the Sentry Monitor is a fuse-less, auto-resetting protection circuit, and Monogrammed Heatsinks are designed to minimize warm-up time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 200W per channel into 8 ohms, 320W into 4 ohms\u003c\/li\u003e\n\u003cli\u003eTubes: 2x 12AX7A plus 2x 12AT7, preamp stage\u003c\/li\u003e\n\u003cli\u003eInputs: 2 balanced XLR, 3 unbalanced RCA, 1 phono MM (adjustable loading)\u003c\/li\u003e\n\u003cli\u003eOutputs: 1 unbalanced variable preamp out, 2 subwoofer outs, headphone 1\/4 inch HXD\u003c\/li\u003e\n\u003cli\u003eTHD: 0.03%\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.5 in W x 9.875 in H x 17.4375 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 66 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143937777981,"sku":"MAC-MA352","price":8000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0018.webp?v=1790735670"},{"product_id":"mcintosh-ma8950-integrated-amplifier","title":"McIntosh MA8950 Integrated Amplifier","description":"\u003cp\u003eThe solid state successor to the MA8900, with doubled filter capacitance that raises dynamic headroom from 2.0dB to 3.1dB for improved peak reproduction and bass control. McIntosh Autoformers guarantee full power across 2, 4 or 8 ohm loads, with Power Guard, Sentry Monitor and Monogrammed Heatsinks, plus the newer DA2 digital audio module.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 200W per channel into 2, 4 or 8 ohms\u003c\/li\u003e\n\u003cli\u003eInputs: 1 balanced, 6 unbalanced, 1 phono MC plus 1 phono MM, plus DA2 digital module\u003c\/li\u003e\n\u003cli\u003eOutputs: 1 unbalanced fixed, 2 unbalanced variable, headphone 1\/4 inch HXD\u003c\/li\u003e\n\u003cli\u003eTHD: 0.005%\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.5 in W x 7.625 in H x 18.75 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 75 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143937843517,"sku":"MAC-MA8950","price":10500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0019.webp?v=1790735839"},{"product_id":"mcintosh-ma252-integrated-amplifier","title":"McIntosh MA252 Integrated Amplifier","description":"\u003cp\u003eMcIntosh's first hybrid integrated amplifier, styled after the classic MC275 vacuum tube amplifier in a compact 12 inch wide chassis. Hybrid Drive technology pairs two 12AX7A and two 12AT7 preamp tubes, housed in protective cages, with a direct-coupled solid state output stage, and Monogrammed Heatsinks are designed to eliminate the usual warm-up time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 100W per channel into 8 ohms, 160W into 4 ohms\u003c\/li\u003e\n\u003cli\u003eTubes: 2x 12AX7A plus 2x 12AT7, caged and visible\u003c\/li\u003e\n\u003cli\u003eInputs: 1 balanced XLR, 2 unbalanced RCA, 1 phono MM (fixed loading)\u003c\/li\u003e\n\u003cli\u003eOutputs: headphone 1\/4 inch HXD, 1 mono subwoofer out\u003c\/li\u003e\n\u003cli\u003eTHD: 0.03%\u003c\/li\u003e\n\u003cli\u003eDimensions: 12 in W x 7-5\/8 in H x 16-1\/2 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 28 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143937974589,"sku":"MAC-MA252","price":5000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0021.webp?v=1790735628"},{"product_id":"mcintosh-ma5300-integrated-amplifier","title":"McIntosh MA5300 Integrated Amplifier","description":"\u003cp\u003eMcIntosh's smallest solid state integrated amplifier in both power output and physical size, using direct-coupled circuitry. Monogrammed Heatsinks are designed to eliminate warm-up time, and the DA1 digital audio module is an 8-channel, 32-bit DAC supporting DSD256 and DXD at 384kHz that can be user-upgraded.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 100W per channel into 8 ohms, 160W into 4 ohms\u003c\/li\u003e\n\u003cli\u003eInputs: 1 balanced, 4 unbalanced, 1 phono MM, plus DA1 digital module (2 coax, 2 optical, 1 USB DSD256, 1 MCT)\u003c\/li\u003e\n\u003cli\u003eOutputs: 1 unbalanced variable, headphone 1\/4 inch HXD\u003c\/li\u003e\n\u003cli\u003eTHD: 0.005%\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.5 in W x 6 in H x 18.75 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 38 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143938302269,"sku":"MAC-MA5300","price":7000.0,"currency_code":"USD","in_stock":true}]},{"product_id":"mcintosh-mc275-power-amplifier","title":"McIntosh MC275 Power Amplifier","description":"\u003cp\u003eMcIntosh's storied tube stereo amplifier, introduced in 1961 and now in its sixth generation, built around the widest-bandwidth version yet of the Unity Coupled Circuit output transformer technology McIntosh was founded on in 1949, giving tauter bass and quieter thermal performance. Four KT88 output tubes are joined by four 12AT7 and three 12AX7A smaller tubes, with Sentry Monitor fuse-less short-circuit protection and Solid Cinch gold-plated binding posts.\u003c\/p\u003e\u003cp\u003eThe only tube amp currently in McIntosh's power amp lineup; there is no current tube monoblock.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 75W per channel stereo into 4, 8 or 16 ohms; 150W mono into 2, 4 or 8 ohms\u003c\/li\u003e\n\u003cli\u003eTopology: vacuum tube, Unity Coupled Circuit output transformers\u003c\/li\u003e\n\u003cli\u003eTubes: 4x KT88 output tubes, 4x 12AT7 plus 3x 12AX7A driver\/input tubes\u003c\/li\u003e\n\u003cli\u003eTHD: under 0.5% max, under 0.25% at 1kHz\u003c\/li\u003e\n\u003cli\u003eDamping factor: greater than 22\u003c\/li\u003e\n\u003cli\u003eDimensions: 16.5 in W x 8.5 in H x 12 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 67 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143938433341,"sku":"MAC-MC275","price":7500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0006.webp?v=1790735313"},{"product_id":"mcintosh-mc312-power-amplifier","title":"McIntosh MC312 Power Amplifier","description":"\u003cp\u003eA step up in headroom from the MC152. Compared to its predecessor, doubled filter capacitance gives 27 percent more dynamic headroom, from 1.8dB to 2.3dB, and its Autoformers sit in glass-topped enclosures that show the wiring diagram, straddling the power transformer. Power Guard, Sentry Monitor and Solid Cinch gold-plated binding posts carry over from the rest of the line.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 300W per channel into 2, 4 or 8 ohms\u003c\/li\u003e\n\u003cli\u003eTopology: solid state, push-pull complementary\u003c\/li\u003e\n\u003cli\u003eTHD: 0.005%\u003c\/li\u003e\n\u003cli\u003eDamping factor: greater than 40, wideband\u003c\/li\u003e\n\u003cli\u003eFeatures: Autoformer, Power Guard, Sentry Monitor, Solid Cinch gold-plated binding posts, blue Watt meters\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.5 in W x 9.4 in H x 22 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 105 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143938564413,"sku":"MAC-MC312","price":8500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0005.webp?v=1790735277"},{"product_id":"mcintosh-mc462-power-amplifier","title":"McIntosh MC462 Power Amplifier","description":"\u003cp\u003eThe top of McIntosh's conventional stereo amplifier range, replacing the MC452 as its most powerful two-channel amp in a single chassis. A dedicated Autoformer per channel and Quad Balanced circuitry cancel virtually all noise and distortion, and 50 percent more filter capacitance than its predecessor gives 66 percent more dynamic headroom, from 1.8dB to 3.0dB.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 450W per channel into 2, 4 or 8 ohms\u003c\/li\u003e\n\u003cli\u003eTopology: solid state, Quad Balanced\u003c\/li\u003e\n\u003cli\u003eTHD: 0.005%\u003c\/li\u003e\n\u003cli\u003eDamping factor: greater than 40, wideband\u003c\/li\u003e\n\u003cli\u003eFeatures: dedicated Autoformer per channel, Power Guard, Sentry Monitor, illuminated blue Watt meters\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.5 in W x 9.4375 in H x 22.5 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 115 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143938695485,"sku":"MAC-MC462","price":11500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0004.webp?v=1790735229"},{"product_id":"mcintosh-mc611-monoblock-power-amplifier","title":"McIntosh MC611 Monoblock Power Amplifier","description":"\u003cp\u003eMcIntosh's entry point into monoblock power, delivering 600 watts with the same Autoformer, Power Guard, Sentry Monitor and Quad Balanced circuitry as the rest of the power amp line. Doubled filter capacitance over its predecessor gives 55 percent more dynamic headroom, from 1.8dB to 2.8dB, and its Autoformer and power transformer sit in glass-topped enclosures with an 8 inch blue watt meter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 600W into 2, 4 or 8 ohms\u003c\/li\u003e\n\u003cli\u003eTopology: solid state, Quad Balanced\u003c\/li\u003e\n\u003cli\u003eTHD: 0.005%\u003c\/li\u003e\n\u003cli\u003eDamping factor: greater than 40, wideband\u003c\/li\u003e\n\u003cli\u003eFeatures: Autoformer, Power Guard, Sentry Monitor, 8 inch blue power meter, 3 sets of binding posts for different impedances\u003c\/li\u003e\n\u003cli\u003eDimensions: 17.5 in W x 9.44 in H x 22 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 97.5 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143938761021,"sku":"MAC-MC611","price":9500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0003.webp?v=1790735187"},{"product_id":"mcintosh-mc1-25kw-monoblock-power-amplifier","title":"McIntosh MC1.25KW Monoblock Power Amplifier","description":"\u003cp\u003eA high power Quad Balanced monoblock sitting between the MC611 and the flagship MC2.1KW, replacing the MC1.2KW as McIntosh's most powerful single-chassis monoblock. Fifty percent more filter capacitance than its predecessor feeds an 11 inch blue watt meter with LED backlighting, and its weight, at 158 lbs, reflects the scale of its power supply.\u003c\/p\u003e\u003cp\u003eWe are verifying the exact per-channel wattage and full spec sheet with McIntosh before publishing final copy; the figure below is a placeholder pending that confirmation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: approximately 1200W class, to be confirmed against McIntosh's published spec sheet\u003c\/li\u003e\n\u003cli\u003eTopology: solid state, Quad Balanced\u003c\/li\u003e\n\u003cli\u003eTHD: 0.005%\u003c\/li\u003e\n\u003cli\u003eDamping factor: greater than 40, wideband\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143938793789,"sku":"MAC-MC1P25KW","price":15500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0002.webp?v=1790735141"},{"product_id":"mcintosh-mc2-1kw-monoblock-power-amplifier","title":"McIntosh MC2.1KW Monoblock Power Amplifier","description":"\u003cp\u003eMcIntosh's reference monoblock, built as a three-chassis system: one Output Module plus two 1,000-watt Power Modules. McIntosh splits each module to over 120 lbs rather than building a single 400-lb chassis, which also lets the amplifier run on standard household outlets instead of specialized high-voltage wiring. The signal is split into in-phase and out-of-phase components, sent to each Power Module, then recombined in the Output Module through a bi-filar wound Autoformer that sums the power while canceling noise.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 2,000W into 2, 4 or 8 ohms\u003c\/li\u003e\n\u003cli\u003eTopology: solid state, tri-chassis, 1 Output Module plus 2 Power Modules\u003c\/li\u003e\n\u003cli\u003eTHD: 0.005%\u003c\/li\u003e\n\u003cli\u003eDamping factor: greater than 40, wideband\u003c\/li\u003e\n\u003cli\u003eFeatures: hand-wound Autoformer, illuminated blue Watt meter\u003c\/li\u003e\n\u003cli\u003eDimensions: Output Module 17-15\/16 in W x 12-5\/32 in H x 30-3\/16 in D; each Power Module 17-15\/16 in W x 11-7\/8 in H x 30-3\/16 in D\u003c\/li\u003e\n\u003cli\u003eWeight: Output Module 125 lbs, each Power Module 145 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":53143938826557,"sku":"MAC-MC2P1KW","price":57500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/IMG-0001.jpg?v=1790735098"},{"product_id":"boulder-3060-power-amplifier","title":"Boulder 3060 Stereo Power Amplifier","description":"\u003cp\u003eThe 3060 is Boulder's highest performing stereo power amplifier, built to order and hand-assembled at Boulder's facility in Louisville, Colorado.\u003c\/p\u003e\u003cp\u003eIt runs full Class A bias to its full 900W per channel output, using four gain stages of Boulder's 99H circuit, 60 bipolar output transistors per channel, 48 filter capacitors, and five potted power transformers in machined cases for silent operation.\u003c\/p\u003e\u003cp\u003eIt ships on a custom machined aluminum and polished stainless steel base cut to match the amplifier's footprint.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 900W per channel continuous into any load, peak 1000W at 8 ohms, 1650W at 4 ohms, 2000W at 2 ohms\u003c\/li\u003e\n\u003cli\u003eTopology: Class A\u003c\/li\u003e\n\u003cli\u003eTHD: 0.0006% to 0.0025% depending on load and frequency\u003c\/li\u003e\n\u003cli\u003eGain: 26dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 0.015Hz to 200kHz, -3dB\u003c\/li\u003e\n\u003cli\u003eInputs: balanced XLR only\u003c\/li\u003e\n\u003cli\u003eOutputs: dual wingscrew posts, bi-wire capable\u003c\/li\u003e\n\u003cli\u003eWeight: amplifier 355 lbs, base 86 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Boulder","offers":[{"title":"Default Title","offer_id":53145003295037,"sku":"BOULDER-3060","price":180000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/productimg_3060_featured-650x425.png?v=1790267603"},{"product_id":"boulder-3050-monoblock-power-amplifier","title":"Boulder 3050 Mono Power Amplifier","description":"\u003cp\u003eThe 3050 is Boulder's flagship monoblock power amplifier, hand-assembled and built to order in Louisville, Colorado, using the 99H gain stage exclusive to the 3000 Series.\u003c\/p\u003e\u003cp\u003eIt runs pure Class A biasing with analog management that reduces bias current to cut heat, using 120 output transistors and four DC-filtered transformers sealed in machined, epoxy-potted housings.\u003c\/p\u003e\u003cp\u003eIts circuit boards mount in machined aluminum frames sandwiched with damping material, and its mirror-imaged left and right chassis use multiple surface angles to break up reflected sound.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 1500W continuous into any load, peak 2100W at 8 ohms, 3000W at 4 ohms, 6000W at 2 ohms\u003c\/li\u003e\n\u003cli\u003eTopology: Class A to full rated output\u003c\/li\u003e\n\u003cli\u003eTHD: 0.0005% to 0.011%\u003c\/li\u003e\n\u003cli\u003eGain: 26dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: +0.00\/-0.04dB (20Hz to 20kHz)\u003c\/li\u003e\n\u003cli\u003eInputs: balanced XLR only\u003c\/li\u003e\n\u003cli\u003eOutputs: dual wingscrew posts\u003c\/li\u003e\n\u003cli\u003eWeight: 355 lbs per amplifier, plus 86 lbs base\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Boulder","offers":[{"title":"Pair","offer_id":53145003327805,"sku":"BOULDER-3050-PAIR","price":336000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/3050-Updated-front-Pair-angled-650x356.jpg?v=1790267579"},{"product_id":"boulder-2150-monoblock-power-amplifier","title":"Boulder 2150 Mono Power Amplifier","description":"\u003cp\u003eThe 2150 replaces Boulder's 2050, a design that stayed in production for nearly 18 years, and reflects three decades of Boulder amplifier design refinement.\u003c\/p\u003e\u003cp\u003eIt uses computer-designed surface-mount boards secured in custom-machined, damped frames, dual toroidal transformers potted in welded steel enclosures, and two 99H2 gain stages descended from the 990 studio gain stage, with 80 bipolar output transistors and full Class A biasing with analog efficiency management.\u003c\/p\u003e\u003cp\u003eIt includes Boulder Link integration, a 12V trigger, and bi-wire terminals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: peak 1000W at 8 ohms, 2000W at 4 ohms, 4000W at 2 ohms\u003c\/li\u003e\n\u003cli\u003eTHD: 0.0008% to 0.009%\u003c\/li\u003e\n\u003cli\u003eTopology: Class A to full rated output\u003c\/li\u003e\n\u003cli\u003eInputs: balanced XLR, 200k ohms bal, 100k ohms unbal\u003c\/li\u003e\n\u003cli\u003eOutputs: dual wingscrew posts, bi-wire capable\u003c\/li\u003e\n\u003cli\u003eWeight: 220 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Boulder","offers":[{"title":"Default Title","offer_id":53145003458877,"sku":"BOULDER-2150","price":69000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/productimg_2150_front-650x425.png?v=1790267469"},{"product_id":"boulder-2160-power-amplifier","title":"Boulder 2160 Stereo Power 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response: 0.015Hz to 200kHz, -3dB\u003c\/li\u003e\n\u003cli\u003eInputs: balanced XLR only\u003c\/li\u003e\n\u003cli\u003eOutputs: dual wingscrew posts\u003c\/li\u003e\n\u003cli\u003eWeight: 220 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Boulder","offers":[{"title":"Default Title","offer_id":53145003491645,"sku":"BOULDER-2160","price":75000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/productimg_2160_front-1200x785.png?v=1790267455"},{"product_id":"boulder-1151-monoblock-power-amplifier","title":"Boulder 1151 Mono Power Amplifier","description":"\u003cp\u003eThe 1151 brings Boulder's amplifier engineering into a chassis sized to fit a conventional rack, sharing its footprint with the 1110 preamplifier and 1163 stereo amplifier.\u003c\/p\u003e\u003cp\u003eIt uses a Class A Smart Current biasing circuit and protection circuitry that shuts down the output stage immediately on a shorted cable or fault, built around 40 output transistors and 12 supply capacitors per chassis.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 250W continuous into 8, 4 or 2 ohms, peak 350W at 8 ohms, 600W at 4 ohms, 750W at 2 ohms\u003c\/li\u003e\n\u003cli\u003eTHD: 0.002% to 0.02%\u003c\/li\u003e\n\u003cli\u003eGain: 26dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: +0.00\/-0.04dB, -3dB points 0.015Hz\/150kHz\u003c\/li\u003e\n\u003cli\u003eInputs: balanced XLR, 200k ohms bal, 100k ohms unbal\u003c\/li\u003e\n\u003cli\u003eOutputs: dual wingscrew posts\u003c\/li\u003e\n\u003cli\u003eWeight: 54 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Boulder","offers":[{"title":"Default Title","offer_id":53145003524413,"sku":"BOULDER-1151","price":25000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/1151-pair-Background-copy-650x317.jpg?v=1791342699"},{"product_id":"boulder-1162-power-amplifier","title":"Boulder 1162 Stereo Power Amplifier","description":"\u003cp\u003eThe 1162 is the newest and largest addition to Boulder's 1100 Series, built for more demanding speaker loads.\u003c\/p\u003e\u003cp\u003eIts front panel is machined with the topography of Flagstaff Mountain near Boulder's Colorado headquarters, and it uses the same Class A Smart Current biasing circuit and shutdown protection circuitry as the 1151, plus Ethernet-enabled supervisor circuitry for monitoring and IP or HTML control.\u003c\/p\u003e\u003cp\u003eIt delivers 300W continuous with dual DC-filtered power transformers enclosed in welded steel cases and four speaker-terminal pairs for bi-wiring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 300W continuous at 8 ohms, peak 450W at 8 ohms, 900W at 4 ohms, 1000W at 2 ohms\u003c\/li\u003e\n\u003cli\u003eTHD: 0.002% to 0.02%\u003c\/li\u003e\n\u003cli\u003eGain: 26dB\u003c\/li\u003e\n\u003cli\u003eInputs: balanced XLR, 200k ohms bal, 100k ohms unbal\u003c\/li\u003e\n\u003cli\u003eOutputs: binding posts\u003c\/li\u003e\n\u003cli\u003eWeight: 135 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Boulder","offers":[{"title":"Default Title","offer_id":53145003589949,"sku":"BOULDER-1162","price":45000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/1162-Angled-Dramatic-650x433.png?v=1790267408"},{"product_id":"boulder-1163-power-amplifier","title":"Boulder 1163 Stereo Power Amplifier","description":"\u003cp\u003eThe 1163 is a more compact alternative to the 1162, sized for smaller rooms or more efficient speakers, sharing the 1110 preamplifier's footprint.\u003c\/p\u003e\u003cp\u003eIt uses Boulder's proprietary 985 gain stage and the same protection circuitry as the 1162, with a revised automatic biasing circuit that removes the need for manual calibration, and its firmware can be updated by download or USB.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 150W continuous into 8, 4 or 2 ohms, peak 200W at 8 ohms, 325W at 4 ohms, 550W at 2 ohms\u003c\/li\u003e\n\u003cli\u003eTHD: 0.002% to 0.02%\u003c\/li\u003e\n\u003cli\u003eInputs: balanced XLR, 50k ohms bal, 25k ohms unbal\u003c\/li\u003e\n\u003cli\u003eOutputs: dual wingscrew posts\u003c\/li\u003e\n\u003cli\u003eWeight: 54 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Boulder","offers":[{"title":"Default Title","offer_id":53145003655485,"sku":"BOULDER-1163","price":29500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/1163-Left-Front-e1743199658242-1200x594.png?v=1790267392"},{"product_id":"boulder-866-integrated-amplifier","title":"Boulder 866 Integrated Amplifier","description":"\u003cp\u003eThe 866 is Boulder's flagship integrated amplifier, an advance on its predecessor with more power delivered at lower weight and cost through manufacturing efficiencies.\u003c\/p\u003e\u003cp\u003eIt delivers 200W per channel through new circuitry that allows higher current at maximum power, and is offered as an all-analog model or with added digital streaming over USB, Ethernet, AES3, Toslink, AirPlay, and Roon.\u003c\/p\u003e\u003cp\u003eIts circuit boards and metalwork are produced entirely in-house, and it is controlled through a full-color touchscreen or a companion mobile app with customizable source labeling.\u003c\/p\u003e\u003cp\u003ePrice shown is the base analogue-only configuration; the digital and streaming version costs more. 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Call for pricing until it's confirmed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 100W continuous at 8 ohms, 150W peak; 200W continuous \/ 250W peak at 4 ohms; 350W peak at 2 ohms\u003c\/li\u003e\n\u003cli\u003eTHD: 0.002%\u003c\/li\u003e\n\u003cli\u003eGain: 26dB\u003c\/li\u003e\n\u003cli\u003eInputs: 1 pair balanced XLR\u003c\/li\u003e\n\u003cli\u003eOutputs: binding post\u003c\/li\u003e\n\u003cli\u003eDimensions: 12 in x 12 in x 3.5 in\u003c\/li\u003e\n\u003cli\u003eWeight: 22 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Boulder","offers":[{"title":"Default Title","offer_id":53145004147005,"sku":"BOULDER-851","price":21500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/851-Front-Angled-In-Bright-1200x800.png?v=1790267187"},{"product_id":"audio-research-i-70-integrated-amplifier","title":"Audio Research I\/70 Integrated Amplifier","description":"\u003cp\u003eThe I\/70 is Audio Research's larger current integrated amplifier, styled after the flagship Reference 330M with machined aluminum and mesh panels, and uses the same output transformer as Audio Research's Reference 75.\u003c\/p\u003e\u003cp\u003eIt runs four KT120 output tubes with proprietary auto-bias, pairs independent tube preamp and power amp sections with external sub and power-amp outputs, and includes an AKM Velvet Sound DAC chip with USB, optical, coaxial, and Bluetooth inputs.\u003c\/p\u003e\u003cp\u003eAn optional phono card with MM and MC settings is available, and the headphone output is driven directly from the KT120 output tubes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 70W per channel continuous (20Hz to 20kHz), 1% THD at 1kHz, under 0.1% THD at 1W\u003c\/li\u003e\n\u003cli\u003eTubes: two matched pairs KT120 output, three 6922 (one input, two driver)\u003c\/li\u003e\n\u003cli\u003eInputs: 1 balanced XLR plus 3 single-ended RCA\u003c\/li\u003e\n\u003cli\u003eOutputs: 8\/4 ohm taps, subwoofer pre-out\u003c\/li\u003e\n\u003cli\u003eOptional phono card: MC and MM gain settings, MC loading adjustable 50 to 1000 ohms\u003c\/li\u003e\n\u003cli\u003eHeadphone output: yes, driven directly off the KT120 output tubes\u003c\/li\u003e\n\u003cli\u003eDimensions: 16.5 in W x 8.25 in H x 13.5 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 55 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":53145005752637,"sku":"ARC-I70","price":9950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/Product-grid-I-70-1024x7652.jpg?v=1790262937"},{"product_id":"audio-research-i-55-integrated-amplifier","title":"Audio Research I\/55 Integrated Amplifier","description":"\u003cp\u003eThe I\/55 is a successor to Audio Research's I\/50 integrated amplifier, carrying over technology developed for the larger I\/70 while keeping the I\/50's compact size and power.\u003c\/p\u003e\u003cp\u003eIt is an all-tube design with two matched pairs of 6550 power tubes and 6922 input tubes, adding auto-bias that the I\/50 lacked, with an independent active tube preamp section, an AKM Velvet Sound DAC with USB, optical, coaxial, and Bluetooth inputs, and an optional phono card with adjustable MC loading.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower: 50W continuous (20Hz to 20kHz), approximately 1% THD at rated output, under 0.1% at 1W\u003c\/li\u003e\n\u003cli\u003eTubes: two matched pairs 6550WE output, three 6922 input\/driver\u003c\/li\u003e\n\u003cli\u003eInputs: 4 total, 1 balanced XLR plus 3 single-ended RCA; 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