I have a 1981 Marshall 2204 that has been Modded by Lee Jackson and has the 2nd Master with Attenuator Circuit in it. I would like to add a Zero Loss Loop but from what I've read this seems like it could be a issue or may not work. Can anybody tell if this is true and what I may need to do make it work or if there are any other options for a Loop in my Amp.
Here is a Gut Shot of my Amp.
