Great video and excellent explantion Pete.
Thanks a ton!! Love the mic reflector/holder and the iso cab space.
As for the question about the solidstate poweramp, Pete has done other vids with his Matrix GT1000, so that would be my guess. Although if you notice he has a quite few pieces of AWESOME gear laying around his studio, so I'm sure the Matrix isn't the only possibility.
Keep up the good work Pete, you are truly appreciated for what you do!!