Pedals that stack with the Sound City One Hundred (L100)

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)

Xotic BB Preamp leans smooth right where the bright tone needs it

Goes in front of the amp

pushes an amp at the edge of breakupPushes an amp already sitting at the edge of breakup over the line. (edge of breakup → clean boost)

Into Sound City One Hundred (L100), Analog Man King of Tone 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 → mid-forward)

Stack Catalinbread RAH on top and a crunchy tone tightens toward mid-forward

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)

HomeBrew Electronics CPR Compressor Retro'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.

Walrus Audio Julia's analog warmth voice goes after Sound City One Hundred (L100) in the signal chain — it's not there to compete with Sound City One Hundred (L100)'s own tight 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.

Keep Sound City One Hundred (L100)'s tight voice out front: Caroline Guitar Company Kilobyte goes in Sound City One Hundred (L100)'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

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 JAM Pedals Delay-Llama in Sound City One Hundred (L100)'s effects loop, clear of Sound City One Hundred (L100)'s own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop