Pedals that stack with the Russian Big Muff Pi

Z.Vex Super Hard On

Z.Vex Super Hard On takes that saturated character and pushes it toward clean boost

MXR Micro Amp

Stack MXR Micro Amp on top and a saturated tone tightens toward clean boost

Caroline Guitar Company Parabola State Tremolo

Caroline Guitar Company Parabola State Tremolo's clean boost voice goes after Russian Big Muff Pi in the signal chain — it's not there to compete with Russian Big Muff Pi's own saturated character

Wampler Cory Wong

What Wampler Cory Wong brings here leans toward clean boost — that's worth building a pairing around

Cusack Music Delay TME

Keep Russian Big Muff Pi's saturated voice out front: Cusack Music Delay TME goes after Russian Big Muff Pi in the signal chain so its tight voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Walrus Audio Mako D1 High-Fidelity Stereo Delay V1

Run Walrus Audio Mako D1 High-Fidelity Stereo Delay V1 after Russian Big Muff Pi in the signal chain, clear of Russian Big Muff Pi's own gain stage — goes in the amp's FX loop (or last, into a clean amp)