Pedals that stack with the Marshall DSL20HR Head

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → clean boost)

Analog Man King of Tone takes that high gain character and pushes it toward clean boost

Goes in front of the amp

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → clean boost)

Stack Xotic BB Preamp on top and a high gain tone tightens toward clean boost

Goes in front of the amp

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → clean boost)

Greer Southland takes that high gain character and pushes it toward clean boost

Goes in front of the amp

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Valco Black Hole Vintage Phaser's smooth voice goes after Marshall DSL20HR Head in the signal chain — it's not there to compete with Marshall DSL20HR Head's own high gain character

Goes in front of the amp

shapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain.

Acoustic Strymon Compadre Dual Voice Compressor leans toward compressed, and that's a real, usable character to pair with

Goes in front of the amp

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → slapback)

Keep MXR Analog Delay in Marshall DSL20HR Head's effects loop, clear of Marshall DSL20HR Head's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → ambient)

Mooer A7 Ambience's pristine voice goes in Marshall DSL20HR Head's effects loop — it's not there to compete with Marshall DSL20HR Head's own high gain character — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop