Audio Research S-200

Audio Research S-200

Stereo Power Amplifier

The S-100 and S-200 amplifiers represent Audio Research latest and most advanced entries into solid-state amplifier design. S-200 is a pure Class A/B design, with muscular linear power supplies. Inside you’ll find a truly dual mono platform. Beyond the AC input are dual toroidal transformers feeding fully balanced stereo circuits.

Bipolar transistors were chosen over MOSFETs for their purity, transparency, and better dynamics.

Beginning with a beautifully machined aluminium chassis in either black or silver anodised finish, S-series amplifiers nod to the classic Audio Research design character, but from a sleeker and more modern angle, with custom machined heat sinks and no visible fasteners from the front or top.

After all the measurements and bench testing, every product is proofed by ear, as it has been for decades. All of our S Series amplifiers are produced in our Minnesota facility alongside our Reference Tube Amplifiers.

The S-200 sports power output meters in the style of ARC’s modern meter designs, albeit on a solid black background rather than the transparency of the Reference amplifiers’ Ghost Meters®.

Audio Research S-200 Specifications

Power Output – 200 Watts channel into 8 ohms, 400 Watts channel into 4 ohms
THD – <.1% from 0.25W to rated output into 8 ohms @ 1Khz
Input Sensitivity – 1.8V RMS for rated output
Input Impedance – 100kΩ Balanced or Single-Ended
Gain – Non-inverting. Balanced input pin 2+ (IEC-268)
Input Sensitivity – 1.8VRMS for rated output
Noise – 100dB
Frequency Response – +/- 0.1db from 20Hz to 20KHz
Damping Factor – 300 from 20Hz to 1KHz
Power Requirements – @120VAC, Standby: 0.25W. On, idle: 48W, Rated output: 475W
Dimensions – Width 19″ (48.26 cm), Height 7” (17.78 cm), Depth 17.5” (44.45 cm), Weight: 41lbs (19kg) Net, 63lbs (28.5kg) Shipping