Pedals that stack with the Marshall Studio Classic SC20C 20W 1x10 Combo

Greer Mizuki blue

Greer Mizuki blue leans toward warm, and that's a real, usable character to pair with

Xotic BB Preamp

Xotic BB Preamp's own bright character is the real reason this is worth trying

Analog Man King of Tone

The King of Tone's transparent boost stacks with the SC20C's own biting JCM800-voiced distortion for a fuller push.

MXR Analog Delay

Put MXR Analog Delay in Marshall Studio Classic SC20C 20W 1x10 Combo's effects loop, clear of Marshall Studio Classic SC20C 20W 1x10 Combo's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Universal Audio Golden Reverberator

Keep Marshall Studio Classic SC20C 20W 1x10 Combo's high gain voice out front: Universal Audio Golden Reverberator goes in Marshall Studio Classic SC20C 20W 1x10 Combo's effects loop so its spring voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Catalinbread Many Worlds

Keep Catalinbread Many Worlds after Marshall Studio Classic SC20C 20W 1x10 Combo in the signal chain, clear of Marshall Studio Classic SC20C 20W 1x10 Combo's own gain stage

Seymour Duncan Vise Grip Compressor

Seymour Duncan Vise Grip Compressor leans toward transparent, and that's a real, usable character to pair with