Pedals that stack with the Beetronics Swarm SW1530 Custom

Cordovox PH-8

Run Cordovox PH-8 after Beetronics Swarm SW1530 Custom in the signal chain, clear of Beetronics Swarm SW1530 Custom's own gain stage

JHS Colour Box V2

JHS Colour Box V2 layers clean boost onto an already fuzzy signal

Aguilar Octamizer (Bass Octaver)

Aguilar Octamizer (Bass Octaver) stacks octave on top of the fuzzy already here

Pigtronix Echolution

Put Pigtronix Echolution after Beetronics Swarm SW1530 Custom in the signal chain, clear of Beetronics Swarm SW1530 Custom's own gain stage — 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 Beetronics Swarm SW1530 Custom in the signal chain, clear of Beetronics Swarm SW1530 Custom's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Jackson Audio Bloom V2 Compressor/EQ

Jackson Audio Bloom V2 Compressor/EQ's own transparent character is the real reason this is worth trying