Big Muff or RAT for muddy fuzz, and why I switched

@thelma.weller · 2026-05-20T01:28:41.117+00:00

Ran a Big Muff in front of the Twin for two years in Sextant. Loved it solo. The second I put it in a three-piece next to a drummer who actually hits the snare, it disappeared into the kick drum. All low-mid, no teeth. Tried EQing around it, tried running it cleaner, tried a different cab. Still mud. Switched to a RAT three months ago in Drop C# and I'm not going back. The mids it shoves into the room are exactly the frequencies a Jazzmaster wants to live in. I can leave the Twin's mid knob at 4 and the RAT does the work. With the filter knob about 11 o'clock it's still fuzzy as anything, just fuzzy on top of a defined note instead of fuzzy ON the note. Anyone else made the switch the other way? I want to be talked back into the Muff but every time I plug one in I just hear porridge.

KT
@kobu.tinker2 months ago
The RAT's a Motorola LM308 chip, it's basically a hard-clipped op-amp with a tone stack that ducks below 800Hz. The Muff is four cascaded transistor stages with a scooped mid filter baked in. You didn't switch fuzzes, you switched from scooped to mid-forward. In a three-piece those are not interchangeable. You needed mids, the RAT gave you mids. If you ever play a five-piece with a keys player you'll be back on the Muff inside a week.
LF
@lo.flannery2 months ago
RAT in a three-piece is the right call. I keep one on my board permanently and it's the pedal I reach for when an engineer asks for 'something with attitude'. Filter at noon, gain at 9, volume to taste. One knob really, the filter. Everything else stays where it lives.

Big Muff or RAT for muddy fuzz, and why I switched

4 replies

Your reply