Audio Research LS-2 Preamplifier

The LS-2 is a modern reinterpretation of Audio Research's original LS2 line stage, which won awards worldwide after its 1992 introduction.

It is a pure tube, zero-feedback, Class A design built around two 6H30 dual-triodes, with a touchscreen display styled after the typography of Audio Research's Reference-series GhostMeters.

Optional factory DAC and phono cards can be added, turning this into a more complete system hub if wanted later.

Specifications

• Tubes: two 6H30 dual-triodes
• Inputs/outputs: balanced XLR and single-ended RCA; input impedance 25k ohms both
• Gain: 12dB, both outputs
• THD+N: under 0.03% at 2V RMS balanced
• Frequency response: -0.3dB, 10Hz to 40kHz (balanced, 100k ohm load)
• Dimensions: 19 in W x 7 in H x 17.5 in D
• Weight: 33 lbs
• Optional: factory DAC and/or phono card