Fryette sent me the info on the LPF cap removal. It is super easy once you get the board out. Which wasn't all that easy but not rocket science either. But I guess some people messed it up so they have stopped providing that. Too bad, it really was easy if you were careful and had some idea on how to work on stuff. Since I have built amps and computers and rack gear, etc, it was pretty simple. The silent, I did read there was a mod for that, a jumper I think, but since I just plug in my load, it is not an issue. A shorted jack is supposed to work. I do silent recording all the time with it. I actually don't use that with a speaker sim, I actually have been feeding that back into the PS with a speaker attached, when I can make noise, and "reamp" it. Works great, and it takes like 3-4 minutes of noise to get a track, so I can record to my hearts content and then reamp another time. Works great.