Pedals that stack with the EarthQuaker Devices Black Eye JR Hammertone Limited Edition

Cordovox PH-8

Put Cordovox PH-8 after EarthQuaker Devices Black Eye JR Hammertone Limited Edition in the signal chain, clear of EarthQuaker Devices Black Eye JR Hammertone Limited Edition's own gain stage

Z.Vex Super Hard On

Z.Vex Super Hard On stacks clean boost on top of the fuzzy already here

Walrus Audio Ages

Run fuzzy into Walrus Audio Ages for more clean boost on top

Strymon OB.1 Bass

Strymon OB.1 Bass leans toward clean boost, and that's a real, usable character to pair with

Pigtronix Echolution

Keep EarthQuaker Devices Black Eye JR Hammertone Limited Edition's fuzzy voice out front: Pigtronix Echolution goes after EarthQuaker Devices Black Eye JR Hammertone Limited Edition in the signal chain so its modulated voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Walrus Audio Melee Wall of Noise Black

Put Walrus Audio Melee Wall of Noise Black after EarthQuaker Devices Black Eye JR Hammertone Limited Edition in the signal chain, clear of EarthQuaker Devices Black Eye JR Hammertone Limited Edition's own gain stage — goes in the amp's FX loop (or last, into a clean amp)