0C3 Guitar Amp Controlled Smooth Sag

[enorbet2]

I suppose I should give a reference point so here is a live clip of two (2) Fender Deluxe Reverb Amps I modded for channel switching 30+ years ago in an open mic jam session.  It's somewhat long but annotated so you can FFWD if you like but it shows a similar preamp design to tyhe New Amp just with AB2 power section asnd with only 6L6s. 

Then when I link New Amp clips it should demonstrate the difference that occurs with Direct-Coupled Cathode Follower Tone Stack and 0C3 regulation.  The basic architecture and parts values are nearly identical, with only those 2 exceptions... that and the New Amp maintains the Overdrive stage always connected. not switched, just controlled by the "Volume - Gain" controls.  This is made more usable Live by the expanded range of edge of breakup possible to some degree with the Tone Stack but especially because of the dynamic range characteristics possible with the 0C3.

https://www.youtube.com/watch?v=O2zaciTyzmg

Oh yeah I should mention that although the recording was originally done quite well for the time it was copied onto cassette and badly stored for 30+ years before I attempted to salvage what I could.  I couldn't dismiss all of the tape noise but I think I did a pretty good job of restoring the lost and muddy extremes.  You can definitely get a feel for the amp sounds.