S100 vs Luxman M-900u
The M-900u's power @ 8ω is 150W against the S100's 100W, its power @ 4ω 300W against 200W, and its thd 0.008% against 0.100%. Both share class (AB).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower Amplifiers
Estimated price (community-sourced)
$9,450
Around — community and catalog average, updates slowly
About the S100
The Audio Research S-100 is a high-performance solid-state stereo power amplifier from Audio Research's new core amplification line, designed by Mike Bettinger. It employs a dual-mono architecture with separate toroidal transformers per channel, a differential JFET-based input stage, and Class-AB bipolar transistor output stages for exceptional clarity, dynamics, and low distortion. Fully balanced from input to output, it supports both balanced (XLR) and single-ended (RCA) inputs selectable from the rear panel. Housed in a compact chassis with custom machined heatsinks, it offers classic ARC styling and is praised for its midrange fluidity, bass control, openness, and ability to drive demanding speakers without strain. Ideal for pairing with LS-3 or LS-2 preamps.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 100W @ 8Ω
- Power @ 4Ω
- 200W @ 4Ω
- Amplifier Class
- AB
- Minimum Impedance
- 4Ω
- Input Sensitivity
- 1.8V RMS
- Input Impedance
- 100Ω
Analog Output
Analog signal output specifications
- THD
- 0.100%
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- XLR, RCA
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 483 × 171 × 432 mm (W × H × D)
Key Specifications
Power: 100W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions