MemberJune 4, 2021 at 1:29 am
@foxaudio, I ran it both ways, just as a sub amp and as a 2.1 system from my Topping MX3 as a pre-amp. I did not get any hum or distortion. For the money it seems to be a good little amp. I wish Lepai and others would ALWAYS include the power supply and a auto on/off feature with their amps.
Youtube Link to my build: