The 808 pedal is based on the classic Tube Screamer, but with a tweak here and there to improve tone and better frequency response. A discreet JFet input instead of BJT transistor improves sensitivity, and the MOSFET buffer output makes sure that high quality tone will maintain in your gear setup. But best of all, an external 3 way switch allows you to select the clipping method from the famous Germanium diodes (softer mellower), Silicone diodes (as per the original) or a carefully design mixed between the two, (less compressed, more aggressive) for a wider range of awesome sounds. All this with the classic 808 tone!