Looks like you're re-creating the Tube Cricket.  Here's a link to a discussion forum with the schematic.  I have a Valvecaster running at 12.6V that I really like...I have not tried bridging it to a 386 yet.

http://www.diystompboxes.com/smfforum/index.php?topic=66623.0

I actually own one of these (picked it up used about 15 years ago...)  Mine is 1987 model, USA made, never had to do any work to it or the footpedal.  Clean channel is sort of sterile and over-trebly, but blending with channel 2 is where this amp becomes worthwile.  It's a well-built workhorse that can get some decent sounds (but stay away from the high-gain settings) and is extremely loud (in part due to Fender having a screwy reverse-taper volume pot) -- 65 Watts RMS.  It will never pass as a tube amp, but can come close with proper tweaking.  Try putting a valvecaster in front of it or in the effects loop and it goes from being an "okay" amp to being a "decent" amp.  Oh yeah, it's got a full spring-reverb tank that sounds great.  FWIW, I still have the original red knobs on mine, so there