10W amp

[jmcd]

Hi jmcd

You say my bias supply without a reference to a schematic?

The ones that are actually mine have large filters and extremely low hum as a result, and are tied to the correct points to follow galactic Ground principles.

Every supply node should have the lowest ripple possible, within reason of complexity, cost and circuit context. For an SE amp, cost or complexity must be spent to assure a quiet output, where push-pull has inherent power supply noise rejection when balance  and thus the latter can have a noisier PSU but be quieter overall than SE.

Have fun

I didn't want to post a schematic of your stuff

The negative bias supply in this amp is similar to the one on your 10W power supply PCB. Schematic is probably identical.