Pedals that stack with the Free The Tone IF-1D

Dunlop MXR Distortion Plus

What Dunlop MXR Distortion Plus brings here leans toward warm — that's worth building a pairing around

Electro-Harmonix Green Russian Big Muff

What Electro-Harmonix Green Russian Big Muff brings here leans toward smooth — that's worth building a pairing around

Spaceman Explorer 6-Stage Phaser

Keep Free The Tone IF-1D's fuzzy voice out front: Spaceman Explorer 6-Stage Phaser goes after Free The Tone IF-1D in the signal chain so its modulated voice doesn't muddy it

Strymon OB.1 Bass

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

Catalinbread Epoch-Set

Put Catalinbread Epoch-Set after Free The Tone IF-1D in the signal chain, clear of Free The Tone IF-1D's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Dunlop - MXR Carbon Copy Deluxe Analog Delay

Keep Free The Tone IF-1D's fuzzy voice out front: Dunlop - MXR Carbon Copy Deluxe Analog Delay goes after Free The Tone IF-1D in the signal chain so its analog warmth voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)