Pedals that stack with the Blackstar ST. James 100 Head

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (crunchy → mid-forward)

Feed a crunchy signal into Catalinbread Formula 5F6 and it comes out closer to mid-forward

Goes in front of the amp

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (bright → smooth)

Into Blackstar ST. James 100 Head, Xotic BB Preamp is right at home: it's built around Marshall-style amps

Goes in front of the amp

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

Analog Man King of Tone takes that crunchy 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. (high gain → lush)

JHS 3 Series Harmonic Tremolo's own voicing points at Fender-style amps, and Blackstar ST. James 100 Head 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. (dynamic → compressed)

Blackstar ST. James 100 Head leans into Fender-style amps, precisely the platform Origin Effects SlideRIG Compact Deluxe wants

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.

Strymon TimeLine's pristine voice goes in Blackstar ST. James 100 Head's effects loop — it's not there to compete with Blackstar ST. James 100 Head's own crunchy 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.

Run MXR Analog Delay in Blackstar ST. James 100 Head's effects loop, clear of Blackstar ST. James 100 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