Pedals that stack with the Synergy SYN-20IR Combo

Cornerstone Colosseum's own harmonically rich character is the real reason this is worth trying

Goes in front of the amp

Death By Audio Octave Clang's own octave character is the real reason this is worth trying

Goes in front of the amp

Dophix Michelangelo Overdrive Plus leans toward full, and that's a real, usable character to pair with

Goes in front of the amp

Put Electro-Harmonix Electric Mistress after Synergy SYN-20IR Combo in the signal chain, clear of Synergy SYN-20IR Combo's own gain stage

Goes in front of the amp

Put EarthQuaker Devices Dispatch Master V2 in Synergy SYN-20IR Combo's effects loop, clear of Synergy SYN-20IR Combo's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

Put Electro-Harmonix Holy Grail Max in Synergy SYN-20IR Combo's effects loop, clear of Synergy SYN-20IR Combo's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

Synergy SYN-20IR Combo's own colored character is the real reason this is worth trying

Goes in front of the amp