Pedals that stack with the ENGL E658 Steve Morse Signature 20

Friedman BE-OD

Feed a high gain signal into Friedman BE-OD and it comes out closer to tight

Beetronics Buzzter Boost Preamp

Stack Beetronics Buzzter Boost Preamp on top and a high gain tone tightens toward clean boost

Colorsound Overdriver

Stack Colorsound Overdriver on top and a high gain tone tightens toward clean boost

Electro-Harmonix Deluxe Electric Mistress

Keep Electro-Harmonix Deluxe Electric Mistress after ENGL E658 Steve Morse Signature 20 in the signal chain, clear of ENGL E658 Steve Morse Signature 20's own gain stage

Walrus Audio Fathom

Keep ENGL E658 Steve Morse Signature 20's high gain voice out front: Walrus Audio Fathom goes in ENGL E658 Steve Morse Signature 20's effects loop so its ambient voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Meris Mercury7 Reverb

Keep ENGL E658 Steve Morse Signature 20's high gain voice out front: Meris Mercury7 Reverb goes in ENGL E658 Steve Morse Signature 20's effects loop so its ambient voice doesn't muddy it — 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