This is a prototype of a one-off Rockabilly Amp. The great Brian Setzer said, "I've never heard anything like this before" .... photo from backstage years ago when i repaired few of his Gretsch guitars before and during the concert, incl. his legendary 6120. Can be played in our showroom in Stuttgart. Similiar to THE BLUE AMP, also one-off and owned by George Benson.