I recently picked up one of those little 5w tube amps from Monoprice. On sale those things are ridiculously cheap. Got it to screw around with, maybe steal parts for a project or use it to practice modding. Like lots of others I think it sounds pretty good stock, so I think I'll leave it alone for now. Plays nice and quiet, which is great since I have a 2 year old and a 5 year old who go to bed early. I was hoping to get it to break up a little earlier at lower volumes, and thought putting in a negative feedback switch might help. I've done some work on electronics/soldering, etc. so I know how to use the tools. I know how to drain caps and not get nailed by electricity (electrician by trade...) My knowledge base is laughably small compared to a lot of the others on here, though. So I turn to you for help with my rookie question. Will putting in an on/off for the NFB help get me break up earlier? I think I just clip one end of the NFB resistor and interrupt with a standard spst switch. Is that right? I assume it doesn't matter which side. Any help is appreciated. I have a pic of the inside. I am guessing that the only resistor on that little pcb is the one? Thanks.