Electro-Harmonix English Muff'N Tube Distortion / Preamp 2005 - 2021 - Silver / Red / Blue

Great condition, has a few minor scratches. 

Tested and works great.

Comes with original power supply and Electro-Harmonics tubes.

Has true bypass using a mechanical relay. It's a dual vacuum tube preamp dedicated to a deliver a true tube overdrive. It has two Electro-Harmonix 12AY7 tubes, you can substitute tubes like a 12AX7 for more gain/distortion or a 12AU7 for less gain/distortion. You can experiment with different tube combinations for different tube drive sounds also.