Pedals that stack with the ISP Technologies Distortion

Xotic EP Booster

Xotic EP Booster takes that high gain character and pushes it toward clean boost

Suhr Shiba Drive

Feed a high gain signal into Suhr Shiba Drive and it comes out closer to mid-forward

Electro-Harmonix Deluxe Electric Mistress

Keep ISP Technologies Distortion's high gain voice out front: Electro-Harmonix Deluxe Electric Mistress goes after ISP Technologies Distortion in the signal chain so its modulated voice doesn't muddy it

Hungry Robot Moby Dick V2

Put Hungry Robot Moby Dick V2 after ISP Technologies Distortion in the signal chain, clear of ISP Technologies Distortion's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Hungry Robot The Borderland

Put Hungry Robot The Borderland after ISP Technologies Distortion in the signal chain, clear of ISP Technologies Distortion's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Warm Audio Pedal 76 Compressor

Warm Audio Pedal 76 Compressor's own tight character is the real reason this is worth trying