Electro-Harmonix Classics English Muff'n Overdrive Guitar Effects Pedal
Vintage "British" Vacuum Tube Pre-Amp

The English MUFF'n consists of both a gain stage and a tone control section. The tone control section contains high (treble), midrange, and low (bass) tone controls, which form a traditional "tone stack," as used in vintage pre-amp sections of '60s British guitar amps. A "tone-stack" refers to how an amplifier is voiced for EQ and Gain in the pre-amp section. All three EQ controls are interactive, letting the player dial in anything from hard-driving modern distortion to the sweet sustain of classic vintage models.

As in the classic British amplifiers, the sweetness and power of the tone is a combination of working the preamplifier gain against the Post gain. The more you turn up the preamplifier, the more saturation of the tubes there is. This results in anything from a sweet and subtle blues overdrive all the way to the classic British stack cranked to the max.

It is easy to set up the Muff'n to give you that sweet Brit sound with an emphasis of any part of the EQ curve. For example, dipping the midrange produces the classic scooped sound. As always, experiment to achieve your own unique sounds. For the first time, you really do have the classic British sound. It is totally dependent on the vacuum tubes. No modeling, no DSP, just the classic sound, which was totally created by vacuum tubes just like the originals.