Pedals that stack with the Blackstar Unity

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

Run fuzzy into Carl Martin Purple Moon for more modulated on top

Goes in front of the amp

gain stackingStacks two gain stages for more saturation than either produces alone. (mid-forward → fuzzy)

Put Dunlop FFM6 Band of Gypsys Fuzz Face in front and the mid-forward tone leans further toward fuzzy

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. (fuzzy → octave)

Put Fulltone OF-2 Octafuzz in front and the fuzzy tone leans further toward octave

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. (fuzzy → modulated)

Boss CE-1 Chorus Ensemble's lush voice goes after Blackstar Unity in the signal chain — it's not there to compete with Blackstar Unity's own octave character

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. (fuzzy → octave)

Keep Blackstar Unity's octave voice out front: Walrus Audio Melee Wall of Noise Black goes in Blackstar Unity's effects loop so its ambient 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. (fuzzy → modulated)

Keep Blackstar Unity's octave voice out front: Pigtronix Echolution goes in Blackstar Unity's effects loop so its ambient 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

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

Blackstar Unity's own octave character is the real reason this is worth trying

Goes in front of the amp