There are a few iconic valve guitar amps that we at Mozztronics adore. Apart from the AC amp used by the Beatles & Brian May, the American '59 bass amp loved by guitarists, the amp favoured by Pete Townshend, the other is the iconic 800 series british amp. We have used the 800 version and made our emulation into a solid state footswitchable pedal, which we have named the "Mehrschall" in honour of its parentage. Mehrschall is german for "more sound" which we think is very appropriate. This pedal is not a dirt pedal as such, it's our emulation of this classic amp. To do full justice to the original amp, and to get the maximum in tone versatility we included the full 3 knob tone stack in this pedal. A single tone control, or just a bass & treble control wasn't going to cut it with this pedal. We did tweak the tone stack slightly, as the bass control in these amps is notorious for having little effect, as its frequency is set very low. GAIN controls the amount of gain from the first stage, BASS, MID and TREBLE are the classic 3 knob tone stack as found in the original amp . VOLUME adjusts the overall volume out of the pedal. As with the amplifier this pedal replicates, classic 60s and 70s rock sounds live here, turn up the gain for added rawkus-ness.