Last month my always quite Fender Princeton Reverb tube amp developed a loud hiss. I took my amp in to get it repaired at a high end retail shop in Cleveland. The owner was out of town and one of the employees advised that they sell amps but no longer repair amps. He did advise me where I should go for repairs. The recommendation was Shockproof Sound Services. I met with the owner, Blackie Pagano when I dropped the amp off for repair. I got the amp back this week and it sounds fantastic. If you live in the greater Cleveland area and are in need an expert tube amp repair technician, Blackie is your man. Check out his credentials on his web site, Shockproofsound.com There are not a lot of tube amp repair shops in Cleveland. I just wanted to give my fellow Clevelanders a expert repair shop option.