Audio Research S-200 Stereo Power Amplifier

The Audio Research S-200 is a 200-watt-per-channel (8 ohms) stereo power amplifier that continues ARC’s next-generation solid-state design work. Building on the circuit architecture of the S-100, the S-200 raises the bar with upgraded power supplies, a reinforced output stage, and higher dynamic headroom for more demanding loudspeakers. With deeper control, greater slam, and unmistakable ARC musicality, it delivers authoritative sound with precision and grace. This is power with soul, designed for serious listeners who expect more from their system.

Audio Research S-200 Key Features

• Rated Power: 200 WPC into 8 ohms, 400 WPC into 4 ohms
• Signal Path: Differential JFET input stage, bipolar transistor voltage and output stages
• Topology: Fully balanced from input to output
• Input Select: Rear-panel switchable between balanced XLR and single-ended RCA
• Front Panel: White-on-black dual power meters inspired by ARC Reference Series
• Chassis: New low-profile case with custom-machined heatsinks
• Design Philosophy: Solid-state circuit voiced for ARC’s classic musical presentation
• Manufacturing: Hand-built in Minnesota, USA

Next-Level Power for Demanding Systems

From the first moment, the S-200 asserts its place with headroom and control to spare. Rated at 200 watts into 8 ohms and doubling into 4 ohms, it easily drives difficult loudspeakers while preserving low-level detail and harmonic texture. The upgraded power supply and revised output stage give it a sense of composure under load, even at high playback levels. You’ll hear the full scale of orchestral peaks, rock dynamics, or live jazz immediacy with no sense of strain—just music flowing effortlessly.

Refined Circuitry, Balanced Design

Like the S-100, the S-200 begins with a differential JFET input stage, chosen for its low distortion and wide bandwidth. The fully balanced signal path extends through bipolar voltage and output stages operating in Class AB, resulting in tonal purity and dynamic precision. Balanced and single-ended inputs are both supported via rear-panel selector, giving you flexibility without compromise. Whether paired with ARC’s LS-2 preamp or other high-end gear, the S-200 ensures signal integrity from input to speaker terminal.

Yes, the S-200 has Sexy Meters

The S-200 debuts a new front panel layout with clean white-on-black ARC-style meters for a visual cue of the amplifier’s dynamic output. The low-profile chassis is flanked by large, custom-machined heatsinks for thermal stability and aesthetic impact. Each unit is assembled by hand in Audio Research’s Minnesota facility, part of a continuing legacy of American high-fidelity craftsmanship. Every design decision reflects ARC’s commitment to sonic transparency, reliability, and a musical connection that lasts for decades.

The Listening Room Difference

The Listening Room is a third-generation, family-run hi-fi shop where you’ll often deal directly with Mike Hoatson. We don’t just stock ARC products—we install them, set them up, and stand behind every recommendation. Our nationwide customers get more than a box on their doorstep. They get real advice, expert matching, and white-glove service from people who care about the music as much as they do.

Specifications