GS150 vs VTM-200
The VTM-200's power @ 8ω is 200W against the GS150's 155W, its signal-to-noise 109 dB against 114 dB, and its thd 0.500% against 0.600%. Both share class (Tube).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersTube AmplifiersDiscontinued
Estimated price (community-sourced)
About the GS150
The Audio Research GS150 is a stereo tube power amplifier rated at 155 watts per channel continuously from 20Hz to 20kHz. It uses eight KT150 output tubes—four matched pairs—and four 6H30 driver tubes. The fully balanced design includes custom transformers and capacitors, separate 4-ohm and 8-ohm speaker outputs, balanced XLR inputs, a tube-hour meter, 12V trigger, and RS-232 control. Its front panel has three meters for monitoring output and bias. Frequency response is specified as 0.5Hz–120kHz, with a power bandwidth of 5Hz–80kHz. The amplifier measures 19 inches wide by 9 7/8 inches high by 22 1/2 inches deep, weighs approximately 87 pounds, and consumes approximately 730 watts at rated output. The GS150 is designed to provide high-power, wide-bandwidth performance for demanding loudspeaker loads.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 155W @ 8Ω
- Amplifier Class
- tube
- Minimum Impedance
- 4Ω
- Input Sensitivity
- 2.0V RMS
- Input Impedance
- 300000Ω
Analog Output
Analog signal output specifications
- THD
- 0.600%
- SNR
- 114 dB
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 483 × 251 × 572 mm (W × H × D)
- Weight
- 39.5 kg (87 lbs)
Key Specifications
Power: 155W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions