Pedals that stack with the Marshall JVM205C Combo

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

Feed a high gain signal into Browne Amplification Gritador and it comes out closer to mid-forward

Goes in front of the amp

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

Xotic BB Preamp takes that high gain character and pushes it toward clean boost

Goes in front of the amp

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

Wampler Plexi Drive's own crunchy 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 → modulated)

Keep Origin Effects MAGMA57 Amp Vibrato & Drive after Marshall JVM205C Combo in the signal chain, clear of Marshall JVM205C Combo's own gain stage

Goes in front of the amp

Keep Catalinbread Dirty Little Secret Deluxe in Marshall JVM205C Combo's effects loop, clear of Marshall JVM205C Combo's own gain stage — 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 → slapback)

Keep Marshall JVM205C Combo's high gain voice out front: MXR Analog Delay goes in Marshall JVM205C Combo's effects loop so its warm 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.

DSM & Humboldt ClearComp Compressor's own compressed character is the real reason this is worth trying

Goes in front of the amp