There is a pot for each channel, hard to see with no knobs. When I do one for me, I eliminate the pots as I see them as an impediment to good sound. I will have to run some pots hrough the AP one day and see just how bad they are...
I dunno Lee. I'm not sure if the AP can handle any pot and if you do go down that path no telling what the plots will look like.

(i just thought I'd throw in a tin of SPAM for fun.) 