Pedals that stack with the Warwick DS 500 Double Stage Bass Amp Head

Ashdown Geezer Butler Signature

Run Ashdown Geezer Butler Signature into that transparent platform and it finally gets some low gain

Boss ODB-3

Run Boss ODB-3 into that transparent platform and it finally gets some low gain

Carl Martin PlexiTone

Run Carl Martin PlexiTone into that transparent platform and it finally gets some high gain

EarthQuaker Devices Grand Orbiter V3

Keep Warwick DS 500 Double Stage Bass Amp Head's transparent voice out front: EarthQuaker Devices Grand Orbiter V3 goes after Warwick DS 500 Double Stage Bass Amp Head in the signal chain so its low gain voice doesn't muddy it

Wampler Mini Ego 76 Compressor

Wampler Mini Ego 76 Compressor's own compressed character is the real reason this is worth trying

Fender Hammertone Reverb

Keep Warwick DS 500 Double Stage Bass Amp Head's transparent voice out front: Fender Hammertone Reverb goes in Warwick DS 500 Double Stage Bass Amp Head's effects loop so its lush voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Old Blood Noise Endeavors BL-44 Reverse

Keep Warwick DS 500 Double Stage Bass Amp Head's transparent voice out front: Old Blood Noise Endeavors BL-44 Reverse goes in Warwick DS 500 Double Stage Bass Amp Head's effects loop so its ambient voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)