An EHX English Muff'n with the original 12AYX tubes installed.
I personally prefer 12AX7 tubes in both positions though, but the lower gain stock 12AYX tubes will give a warmer tone, and make much lower gain settings possible, and you could replace one of the tubes, forget which one you are supposed to change for changing overdrive gain range, there are 2 tubes in this pedal, for an even lower gain 12AUX tube, to be able to basically use it as a clean preamp at lowest input gain settings.
One specific one of the two tubes determines the clean output volume at tap, whereas the other tube determines the input gain at tap, aka drive, forget which is which.
Also note that lower gain tube types generally got an inherent warmer/softer character.
This pedal has been out of production for year, but is a fairly common find on the used market, and for quite reasonable prices too.
It's NOT Big Muff based, despite its name, but rather based on a Marshall preamp from a real tube amp, with a passive 3 band tone stack, and is a genuine tube preamp/overdrive, with the tubes operation at proper high 300V plate voltage.
The size and the fact that it needs a dedicated power supply might be a turn off though, but this pedal sounds no short of amazing, and is capable of everything between a light tube breakup overdrive, up to full on distortion, and everything in between.
I personally prefer 12AX7 tubes in both positions though, but the lower gain stock 12AYX tubes will give a warmer tone, and make much lower gain settings possible, and you could replace one of the tubes, forget which one you are supposed to change for changing overdrive gain range, there are 2 tubes in this pedal, for an even lower gain 12AUX tube, to be able to basically use it as a clean preamp at lowest input gain settings.
One specific one of the two tubes determines the clean output volume at tap, whereas the other tube determines the input gain at tap, aka drive, forget which is which.
Also note that lower gain tube types generally got an inherent warmer/softer character.
This pedal has been out of production for year, but is a fairly common find on the used market, and for quite reasonable prices too.
It's NOT Big Muff based, despite its name, but rather based on a Marshall preamp from a real tube amp, with a passive 3 band tone stack, and is a genuine tube preamp/overdrive, with the tubes operation at proper high 300V plate voltage.
The size and the fact that it needs a dedicated power supply might be a turn off though, but this pedal sounds no short of amazing, and is capable of everything between a light tube breakup overdrive, up to full on distortion, and everything in between.
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