The new/current models, ST-500 mkII and ST-1000 mkII won an Absolute Sound Editors Choice award in the new issue, for 2016.
Other reviews on W4S amps...
http://www.positive-feedback.com/Iss...yred4sound.htm
http://www.6moons.com/audioreviews/wyred/monos.html
http://hometheaterhifi.com/reviews/a...ock-amplifier/
http://www.positive-feedback.com/Iss...yred4sound.htm
I wouldn't mind trying a ST-500 mkII because it is a perfect match for my pre-amp and dac, but the Goldmund is so good that..... hmmmmm
RCA and Balanced inputs, 5 year warranties, hand made in America
ST-500 mkII Stereo Amplifier Specs
Typical THD+N 8Ω (10W out): 0.001%
Power Output 8Ω @ 0.2% THD+N: 250W
Power Output 8Ω @ 1.0% THD+N: 277W
Power Output 4Ω @ 0.2% THD+N: 430W
Power Output 4Ω @ 1.0% THD+N: 460W
Output Idle Noise (A Wt.): <125µV
Frequency Response 20Hz-20kHz (8Ω @ 10W): ± 0.1db
Lower Bandwidth: 1.5Hz all loads
Balanced Input Impedance: 100kΩ
Unbalanced Input Impedance: 100kΩ
Dynamic Range (A Wt.): 111db
Gain: 30.5db
Sensitivity: 1.31V
Output Impedance: 0.018Ω
Min Load: 3Ω
Max Output Current: 30A
Idle Power Consumption: <28W
Standby Power Consumption: <0.5W
Dimensions: L 13.75" W 15.75" H 4.625"
ST-1000 mkII Stereo Amplifier Specs
Typical THD+N 8Ω (10W out): 0.001%
Power Output 8Ω @ 0.2% THD+N: 460W
Power Output 8Ω @ 1.0% THD+N: 480W
Power Output 4Ω @ 0.2% THD+N: 725W
Power Output 4Ω @ 1.0% THD+N: 775W
Output Idle Noise (A Wt.): <215µV
Frequency Response 20Hz-20kHz (8Ω @ 10W): ± 0.15db
Lower Bandwidth: 1.5Hz all loads
Balanced Input Impedance: 92kΩ
Unbalanced Input Impedance: 92kΩ
Dynamic Range (A Wt.): 108db
Gain: 30.7db
Sensitivity: 1.75V
Output Impedance: 0.021Ω
Min Load: 4Ω
Max Output Current: 30A
Idle Power Consumption: <28W
Standby Power Consumption: <0.5W
Dimensions: L 13.75" W 15.75" H 4.625"