I have a nice AD200B mkIII that I want to trade for another tube amp. I just picked up a mkI and like it better so this one is on the block. The main amps I’m interested in are: Orange Thunderverb 200 Matamp GT200 Sunn 2000s Marshall Major Mesa Buster Bass Verellen Meatsmoke Satellite 300 Blueline SVT Simms watts ap200 I know some of those are rare, but doesn’t hurt to ask! Obviously I could add cash for the right amp. My amp is in great condition, fully functional with no issues. Tubes are about three years old. I’m in Saskatoon, SK. I travel to Alberta and BC frequently, and also Montana occasionally and could deliver/swap.