The reissue of the original TS-808. This is a stock pedal with no modifications, but is a staple in my setup. It's a great pedal because no matter what sound you have, the Tubescreamer compliments it well, even with other overdrive and distortion pedals. It can give you extra grit and definition, but functions very nicely as an overdrive on its own. Playing clean or blues it gives a nice bit of dirt, when playing metal this thing pushes the Mesa from stock already-damn-heavy into ridiculous super-saturation overdrive.