Audio Research S-100 Power Amplifier

The S-100 is a scaled-down companion to the S-200, sharing its Class A/B, dual-mono topology, dual toroidal transformers, fully balanced circuits, and bipolar-transistor output stage.

It shares the S-200's machined aluminum chassis and concealed-fastener styling and is conservatively rated to double its output into 4-ohm loads.

Specifications

• Power: 100W per channel at 8 ohms, 200W at 4 ohms
• THD: under 0.1% from 0.25W to rated output at 8 ohms, 1kHz
• Inputs: balanced/single-ended, 100k ohms, 1.4V RMS balanced sensitivity
• Dimensions: 19 in W x 7 in H x 17.5 in D
• Weight: 41 lbs