Superlead and Superbass Diagrams, including a 1959T SuperTrem diagram and EVH amp diagrams.
Don’t forget that adding the parallel resistor also reduces the open-loop gain of the output stage to the point where the feedback loop no longer works, which results in more drive from the phase inverter, causing earlier clipping and more Read more
Hi Guys! I looked at the text above that described the mod Cerrem originally described. It is a pretty standard trick for controlling gain of differential stages. A push-pull output stage is what you might describe as a “paraphase” stage Read more
This mod is what Eddie Van Halen used on his Marshall during the early club days, and supposedly NAILS the guitar tone from the first Van Halen album. PTPCircuits.com will not be held responsible for any damages which should occur Read more
From the Plexi Palace: (1) By Mark Cameron from pictures taken in the early 80’S. There ARE small tone altering and/or gain altering mods. I do have pic’s so I CAN physically see that the amp has a split cathode Read more