One pair HM3S High Bias Class AB Amplifier bare PCB base on GOLDMUND GM29
Each PCB Size: 120*75*1.6MM (1OZ copper, FR4 grade A PCB material)
Works voltage:+/-DC45V-55V (each channel transformer power recommend above 200VA)
Output Power :120W+120W (Class AB)
This amp also can be adjust as 30W +30W Class A amp.
23 times magnification
The default price is for 2 channel bare PCB
We can provide the PDF schematic via email
The following assembeld photo just for reference only!