Pedals that stack with the Marshall AVT 20 Valvestate 2000

Catalinbread Dirty Little Secret Mk2's own harmonically rich character is the real reason this is worth trying

Goes in front of the amp

What Catalinbread Dirty Little Secret MKI brings here leans toward dynamic — that's worth building a pairing around

Goes in front of the amp

Catalinbread Sabbra Cadabra 10 Red leans toward bright, and that's a real, usable character to pair with

Goes in front of the amp

Put Origin Effects MAGMA57 Amp Vibrato & Drive after Marshall AVT 20 Valvestate 2000 in the signal chain, clear of Marshall AVT 20 Valvestate 2000's own gain stage

Goes in front of the amp

Keep Catalinbread Dirty Little Secret Deluxe in Marshall AVT 20 Valvestate 2000's effects loop, clear of Marshall AVT 20 Valvestate 2000's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

Put Empress Echosystem in Marshall AVT 20 Valvestate 2000's effects loop, clear of Marshall AVT 20 Valvestate 2000's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

Wampler Ego Compressor goes in front of Marshall AVT 20 Valvestate 2000 in the chain

Goes in front of the amp