Mesa 20/20 pwr amp deep mod

[JeffGT]

Would anyone by chance have a diagram showing this mod? I'm not very good with schematics, but can follow a diagram and solder ok. I don't think it is very involved from what I've read.
thx,
jeff

 

[zenki]

https://forum.grailtone.com/viewtopic.php?f=5&t=31723
Willing to bet this is the most info you will find.

 

[JeffGT]

Ah, thanks very much. I think even I can handle that.

 

[PDC]

FWIW - I owned a Mesa 20/20 with the ‘Deep Mod’ that I ran with a VooDoo Modded Hafler Triple G and it was a BEAST rig. One of the rigs I wished I would have kept. The Deep Mod really broadens the scope of how well the power amp will play with different pre-amps or ‘Amp-In-A-Box‘ pedals out there. It makes the preamp even more versatile. I had mine done with pull pots on the tone control so if they were pushed in, the amp functions as stock.