Hi Pete,
How did it go with getting your Peavey Max 100 preamp working? I have an old one that I bought in Alaska in 2009. I just pulled it out of storage after not using for about 20 years. It lights up, but I can't get any sound out of it. It is so obsolete, but I used to love running it into my Fender Blues Jr. I thought if there was a way to get it working again, it might be fun.