Thanks for the response. I found this info in a search earlier in the week and so far it is the only technical info I have found except for a couple threads on jack replacement. I'll probably order the schematics from Fender so was trying to make sure the Eighty-Five, the Studio 85 and the Deluxe 85 were close to the same amp. I bought it to use at practice and for something with a clean channel to run my Vox Thomas era clone circuits through.