Pedals that stack with the Blackstar BASSU120 Unity 120-Watt Bass Amplifier

Boss ODB-3

The transparent tone has headroom to spare — Boss ODB-3 gives it low gain to fill it with

Wren and Cuff Box of War OG

Run Wren and Cuff Box of War OG into that transparent platform and it finally gets some fuzzy

Way Huge Swollen Pickle

The transparent tone has headroom to spare — Way Huge Swollen Pickle gives it fuzzy to fill it with

MXR ZW90 Wylde Phase

Put MXR ZW90 Wylde Phase after Blackstar BASSU120 Unity 120-Watt Bass Amplifier in the signal chain, clear of Blackstar BASSU120 Unity 120-Watt Bass Amplifier's own gain stage

Boss BC-1X

Boss BC-1X's own compressed character is the real reason this is worth trying

Fjord Fuzz Mime

Keep Blackstar BASSU120 Unity 120-Watt Bass Amplifier's transparent voice out front: Fjord Fuzz Mime goes in Blackstar BASSU120 Unity 120-Watt Bass Amplifier's effects loop so its dark voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Electro-Harmonix Memory Boy Analog Delay

Put Electro-Harmonix Memory Boy Analog Delay in Blackstar BASSU120 Unity 120-Watt Bass Amplifier's effects loop, clear of Blackstar BASSU120 Unity 120-Watt Bass Amplifier's own gain stage — goes in the amp's FX loop (or last, into a clean amp)