Audio Research S-200

14490 €

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The S-100 and S-200 amplifiers represent our 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 aluminum chassis in either black or silver anodized 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®.

SPECIFICATIONS

Type / Topology	Solid‑state power amplifier · fully balanced dual‑mono Class A/B design with bipolar output stages
Power output	200 W per channel into 8 Ω · 400 W per channel into 4 Ω
THD (Total Harmonic Distortion)	< 0.1 % from 0.25 W to rated output into 8 Ω @ 1 kHz
Input sensitivity	1.8 V RMS for rated output
Input impedance	100 kΩ (balanced or single‑ended)
Signal polarity	Non‑inverting (balanced pin 2 +)
Noise / S/N ratio	~100 dB
Frequency response	±0.1 dB from 20 Hz to 20 kHz
Damping factor	300 (20 Hz – 1 kHz)
Power requirements	(at 120 VAC) Standby: 0.25 W · On idle: 48 W · Rated output: ~475 W
Standby power	0.25 W
Dimensions (W × H × D)	19″ × 7″ × 17.5″ (48.26 × 17.78 × 44.45 cm)
Net weight	41 lb (19 kg)
Shipping weight	63 lb (28.5 kg)