You can also contact Dale at www.megatoneamps.com about the valve Jr. He has done a bunch of cool mods with those amps. Our first Wezo amp (before the Wezo 45) was designed on a modded out Valve Jr. It was way cool and came in around 3o watts. Pretty cool, considering those amps are a stock 5 watts. Mike "Wezo" Wesolowski www.megatoneamps.com www.bluesworldorder.com