Pedals that stack with the Subdecay Vector

Cordovox PH-8

Keep Cordovox PH-8 after Subdecay Vector in the signal chain, clear of Subdecay Vector's own gain stage

Walrus Audio Ages

Walrus Audio Ages stacks clean boost on top of the fuzzy already here

Aguilar Octamizer (Bass Octaver)

Run fuzzy into Aguilar Octamizer (Bass Octaver) for more octave on top

Pigtronix Echolution

Keep Subdecay Vector's modulated voice out front: Pigtronix Echolution goes after Subdecay Vector in the signal chain so its modulated voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Walrus Audio Melee Wall of Noise Black

Put Walrus Audio Melee Wall of Noise Black after Subdecay Vector in the signal chain, clear of Subdecay Vector's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Jackson Audio Bloom V2 Compressor/EQ

What Jackson Audio Bloom V2 Compressor/EQ brings here leans toward transparent — that's worth building a pairing around