90's Deville Bias mod

[spruce_moose]

Yo! In the process of completely transforming my old amp, I decided to use the reissue schematic to add a bias control.

If you're confident cutting traces and working with higher voltages and are keen to do the same, PM me. It's literally $2 worth of parts too.

I added an external pot and test point to save future hassle. Also straightforward.. although you've gotta drill some holes