Pedals that stack with the Rainger FX Pull Focus Fuzz

Zvex Seek Trem

Put Zvex Seek Trem after Rainger FX Pull Focus Fuzz in the signal chain, clear of Rainger FX Pull Focus Fuzz's own gain stage

Walrus Audio Ages

Walrus Audio Ages stacks clean boost on top of the fuzzy already here

Aguilar Octamizer (Bass Octaver)

Put Aguilar Octamizer (Bass Octaver) in front and the fuzzy tone leans further toward octave

Pigtronix Echolution

Pigtronix Echolution's modulated voice goes after Rainger FX Pull Focus Fuzz in the signal chain — it's not there to compete with Rainger FX Pull Focus Fuzz's own fuzzy character — goes in the amp's FX loop (or last, into a clean amp)

Walrus Audio Melee Wall of Noise Black

Keep Rainger FX Pull Focus Fuzz's fuzzy voice out front: Walrus Audio Melee Wall of Noise Black goes after Rainger FX Pull Focus Fuzz in the signal chain so its ambient voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

W-LM Compression Fracture

What W-LM Compression Fracture brings here leans toward compressed — that's worth building a pairing around