Pedals that stack with the Mad Professor Stone Grey Distortion

Spaceman Explorer 6-Stage Phaser

Keep Spaceman Explorer 6-Stage Phaser after Mad Professor Stone Grey Distortion in the signal chain, clear of Mad Professor Stone Grey Distortion's own gain stage

Electro-Harmonix Green Russian Big Muff

Electro-Harmonix Green Russian Big Muff leans smooth right where the bright tone needs it

Shin's Music Dumbloid

Stack Shin's Music Dumbloid on top and a high gain tone tightens toward tight

Crazy Tube Circuits Golden Ratio

Crazy Tube Circuits Golden Ratio's own tight character is the real reason this is worth trying

Boss DD-3 Digital Delay

Boss DD-3 Digital Delay's transparent voice goes after Mad Professor Stone Grey Distortion in the signal chain — it's not there to compete with Mad Professor Stone Grey Distortion's own bright character — goes in the amp's FX loop (or last, into a clean amp)

Boss DD-8 Digital Delay

Put Boss DD-8 Digital Delay after Mad Professor Stone Grey Distortion in the signal chain, clear of Mad Professor Stone Grey Distortion's own gain stage — goes in the amp's FX loop (or last, into a clean amp)