Pedals that stack with the Blackstar HT Stage 100 MK III Head

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

Catalinbread VariOboost pushes a high gain tone 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 → mid-forward)

Keeley Red Dirt Overdrive takes that high gain character and pushes it toward mid-forward

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 EP Booster on top and a high gain tone tightens 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. (high gain → modulated)

Keep TC Electronic SCF Gold SE Stereo after Blackstar HT Stage 100 MK III Head in the signal chain, clear of Blackstar HT Stage 100 MK III Head's own gain stage

Goes in front of the amp

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

DryBell Unit67 Compressor's own compressed character is the real reason this is worth trying

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.

Keep Blackstar HT Stage 100 MK III Head's high gain voice out front: TC Electronic Triple Flashback Delay goes in Blackstar HT Stage 100 MK III Head's effects loop so its tight voice doesn't muddy it — 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)

Keep Mooer A7 Ambience in Blackstar HT Stage 100 MK III Head's effects loop, clear of Blackstar HT Stage 100 MK III 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