I bought a mint Garnet Session Master combo amplifier (2 X 12") in Winnipeg in about 2003 then had Gar Gilles service it and autograph it before he passed away. I under stand this is one of Garnet's last models fashioned after the Session Man but with several improvements. An expert told me this model is very rare. Can anyone tell me more about this particular model. The first owner thought he bought it new around 1980- '82.