So its working with the AIC3101 controling two channels of the codec output volume. The codec is noisey becasue seperate grounds are needed.

The next stage will be to use an 8 channel DAC and have each knob control each channel output.

I have a cirrus logic DAC and have soldered it to a proto board. will update here.

This time I will use proper seperatae power supply ground planes and keep audio clean.