http://www.guytronix.com A very cool little tube monster with two knobs and a plan, from Guytronix. You can buy this in a kit, and assemble yourself for an excellent Zen moment and fun project.
Demoed with my http://www.mjtagedfinishes.com MJT Strat, cocked, rocked and loaded with http://www.mojotone.com Mojotone Quiet Coil 58 Pickups, an old Princeton Reverb, hot modded with a 12" Jensen Alnico Blue, mic'd up with http://www.royerlabs.com Royer R121 Ribbon Mic, and http://www.telefunkenelektroakoustik.com Telefunken M81 dynamic microphone. Wired for sound with http://www.bulletcable.com Bullet Cable white coily cable of hair and tasty nastiness...yep!