Guitar World - Electro-Harmonix English Muff'n
The Electro-Harmonix Big Muff is one of the greatest distortion pedals of all time. Which begs the question: Can Electro-Harmonix repeat that magic with the English Muff'n, a tube-driven device inspired by certain beloved British amplifiers? As it turns out, this pedal won't turn your 10-watt solid-state practice amp into a Marshall or Hiwatt stack, but it will provide distortion dawgs with deliciously dirty tones that are as nasty as an East End gangster in a Guy Ritchie flick or as milky as a dairy cow.
Featuring two 12AY7 tubes protected by a reinforced gun-barrel–style cage, the English Muff'n functions like your amp's preamp section and has controls for volume, gain, and high, mid and low EQ. As on a guitar amp, the tone controls interact with each other. Boosting the EQ controls raises the output considerably, while turning all of the tone controls to "0" silences the Muff'n. With serious output boost on tap, the English Muff'n is just the ticket if you want to boost the level of your solos to the stratosphere.
Although based on a classic preamp circuit, this pedal can pump out wicked modern-sounding tones as well as that vicious fuzz that Electro-Harmonix fans know and love so much. Boosting the high and low controls creates razor-sharp highs and massive bottom end, scooping out midrange frequencies like a Ben & Jerry's worker on free-cone day. With the EQ controls at more moderate levels, the English Muff'n proves itself worthy of its name, delivering classic smooth British tones imbued with slightly attenuated midrange frequencies.
The English Muff'n may not truly provide the actual sound and sensation of playing a British amp, but it's a tasty little stomp box that will enhance the sonic range of any amp you plug it into.
PRO: Vicious modern distortion tones
CON: Subdued midrange may not appeal to heavy metal players