NAD today! Got this 1990 2205 and have a few questions. First, the amp works and sounds good, I didn't get the foot switch with it but tried my Vintage-modern switch and got response, just don't know if it's working correctly. Definitely has had some work done to it (to be expected for a 25 year old amp). The amp turns on with the channel LED not lit, when I plug in my guitar it turns red to the "Boost" channel. I have a 2 button push-click/push-click from my VM, the reverb turns on and off but I have to hold the button down to get the clean channel? Also, the Intersil CA3046 chip seems to have been replaced with a NTE 912 equivalent. I've attached some shots of the channel switching jack as it looks as though some caps have been added, not sure though. One area that definitely looks to have been modded is a large cap coming off the board and going to ground.
Any comments would be appreciated,
Ken