This is a question for those who have this amp:
If you put your hand on its cover when it has been running for some time, is it hotter on the left side?
Mine does this. I don't know for how long it did, or even if it always did, I just noticed recently. The difference in temperature is substential.
That seems odd since this amp is symetrical in its layout:
the only difference comes from the black cables attached to the front left.
So fellow PC4002 owners, what is your experience?