Pedals that stack with the Blackstar HT20 Mk. II 20 Watt Combo

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

The King of Tone's transparent boost stacks with the HT20 MkII's own modern, high-gain clean for a fuller push.

Goes in front of the amp

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

Stack Greer Tomahawk on top and a high gain tone tightens toward tight

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

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 → lush)

JHS 3 Series Harmonic Tremolo's own voicing points at Fender-style amps, and Blackstar HT20 Mk. II 20 Watt Combo delivers it

Goes in front of the amp

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

Keeley Bassist'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. (high gain → slapback)

MXR Analog Delay's warm voice goes in Blackstar HT20 Mk. II 20 Watt Combo's effects loop — it's not there to compete with Blackstar HT20 Mk. II 20 Watt Combo'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

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 Blackstar HT20 Mk. II 20 Watt Combo's high gain voice out front: Mooer A7 Ambience goes in Blackstar HT20 Mk. II 20 Watt Combo's effects loop so its pristine 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