Pedals that stack with the DigiTech HammerOn

ZVEX Fuzz Factory

What ZVEX Fuzz Factory brings here leans toward fuzzy — that's worth building a pairing around

Nobels ODR-1

Nobels ODR-1's own full character is the real reason this is worth trying

Dunlop - MXR Carbon Copy Deluxe Analog Delay

Dunlop - MXR Carbon Copy Deluxe Analog Delay's analog warmth voice goes after DigiTech HammerOn in the signal chain — it's not there to compete with DigiTech HammerOn's own octave character — goes in the amp's FX loop (or last, into a clean amp)

Electro-Harmonix Canyon

Run Electro-Harmonix Canyon after DigiTech HammerOn in the signal chain, clear of DigiTech HammerOn's own gain stage — goes in the amp's FX loop (or last, into a clean amp)