The Twin Reverb and the Bandmaster. Their reputation is infamous. As clean as the day is long. No one knows this better than me. I own both amps. So, a few weeks ago Im browsing some DIY pedal websites and I run across the schematic for the "Valvecaster", a tube-based, clean boost/overdrive pedal. It uses a low voltage (12vdc) "starved plate" circuit designed around a 12AU7. Seriously!?!? I immediately fired up the soldering iron and started building! And here is my first completed Valvecaster: Wow! Y'all know that the Twin and the Bandmaster take pedals well anyway, but this pedal was MADE for these amps. It gives them that overdriven tube tone that so many of the other Fender amps are famous for. I hooked the VC up along with an Aqua Puss clone and an NPN Boost (both great DIY builds in their own right) and I was just blown away by the tone I was getting from this setup. I say this is my "first" valvecaster because I do intend to build several more. This design has been around for many years now and there are a number of modified versions floating around. One in particular was dubbed the "Subcaster" and uses 2 sub-miniature 6111 tubes instead of the 12AU7. Im anxious to get that one started. Im really surprised this pedal hasnt gained more popularity outside the DIY community. A search of the guitar forums I frequent will pop up a few old threads but it really hasnt gotten the attention it deserves. Even if you dont play thru a super clean amp, this is an awesome pedal, worthy of some real estate on any pedal board. The build is very simple as DIY pedals go. About $50 in parts and a few hours of your time. So, all you Twin and Bandmaster owners get building! Trust me, you want (need) this pedal!