Been having a blast with my Epi Valve Junior modded by Lone Wolf Harp Amps, also a maker of a mighty fine delay pedal. Running EL-84's and a 12AY-7, with my Rod Piazza built Jt-30 i can crank that puppy up to 8 without any feedback......it lights up my house......ask my neighbors........give them a shout maybe they can help. CaHarpz