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

Colorsound Overdriver

Colorsound Overdriver pushes a high gain tone toward clean boost

Keeley Red Dirt Overdrive

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

Xotic EP Booster

Stack Xotic EP Booster on top and a high gain tone tightens toward clean boost

Electro-Harmonix Deluxe Electric Mistress

Run Electro-Harmonix Deluxe Electric Mistress 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

Warm Audio Pedal 76 Compressor

What Warm Audio Pedal 76 Compressor brings here leans toward tight — that's worth building a pairing around

Walrus Audio Fathom

Walrus Audio Fathom's ambient voice goes in Blackstar HT Stage 100 MK III Head's effects loop — it's not there to compete with Blackstar HT Stage 100 MK III Head's own transparent character — goes in the amp's FX loop (or last, into a clean amp)

Mooer A7 Ambience

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)