Thunderfunk TFB550-B with The Switch: Very good condition, just a couple light scratches Amp was just serviced by Dave @ Thunderfunk in Dec 2008. I had the Gold chip installed, he replace the long toggle switches with the newer short bats. It was checked & cleaned & Dave gave it the gold signature on the back. Currently has handle & rubber feet mounted but comes with rack ears also. Price: $800 including shipping in the lower 48 states.