Pedals that stack with the Marshall 2203KK Kerry King JCM800

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)

Run Xotic BB Preamp after it and the bright edge settles into something more smooth

Goes in front of the amp

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

Run mid-forward into Colorsound Overdriver for more fuzzy on top

Goes in front of the amp

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

Analog Man King of Tone pushes a high gain tone 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 → modulated)

Run Origin Effects MAGMA57 Amp Vibrato & Drive after Marshall 2203KK Kerry King JCM800 in the signal chain, clear of Marshall 2203KK Kerry King JCM800's own gain stage

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.

Suhr Discovery's warm voice goes in Marshall 2203KK Kerry King JCM800's effects loop — it's not there to compete with Marshall 2203KK Kerry King JCM800's own crunchy character — 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.

Crazy Tube Circuits Golden Ratio leans toward tight, and that's a real, usable character to pair with

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.

Run Boss DD-3 Digital Delay in Marshall 2203KK Kerry King JCM800's effects loop, clear of Marshall 2203KK Kerry King JCM800's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop