The module is made of very high quality. I connected a 36 volt 400 watt power supply to the power supply, but set the voltage to 38 volts. After working for more than 6 hours, the amplifier radiator is slightly warm. I'm happy with the sound, everything is in its place. A few comments (maybe the manufacturer will take into account) - it would be good if an XLR-RCA input switch and missing chips were installed. The delivery was very fast, thanks to Audiophonics.