CP Thornton Guitars has posted the Tone Quest Report magazine from August 2007 (PDF), which features a dissection of Stevie Ray Vaughan’s ’64 Vibroverb amp. SRV’s amp tech Cesar Diaz had done quite a few modifications to the amp, including changing the caps, adding a larger transformer as well as many other mods. It’s interesting to read how the amp was modified to help give SRV his massive tone.
(via TGP)