SRV with no hum

Why do so many guitar players seek out the warm sound of a tube amp? The Blues set is less aggressive, warmer, rounder Aged *Strat sound with milder attack than the Trad Mk-II in clean mode and breaks into crunch more easily. Surprising Alnico detail with less brightness, medium strong output. The Blues set is also great for smooth overdrive sounds with 'clarity and TONE', with Zero-Hum