SPS01 - help with build

[peranders]

It's rather common that multi-channel amps have separate power supplies becauce it's hard (nearly impossible) to have one power supply and one ground point. It can be tricky enough to make a stereo amp with one PS. My QRP01 has an advanced pcb pattern in order to make a good ground. PA03 has also an advanced grounding technology. I think you should get in contact with your amp module supplier in these questions.