Extremely rare Bruce Zinky Supro Tremolectric Amp. This is the Vibro King as it was suppose to be designed back in Zinky's Fender days. It's a two channel hand wired tone monster. The tremolo and reverb are simply stellar. The original 2 foot switches are included. These are no longer available and those who own them rarely sell them. This is a very low serial number #30. This was only used in my home studio and never gigged. Thanks for looking.