Pedals that stack with the Walrus Audio Power 15

Fulltone OCD

Fulltone OCD leans toward full, and that's a real, usable character to pair with

J. Rockett Archer

J. Rockett Archer's own high headroom character is the real reason this is worth trying

EarthQuaker Devices Night Wire

Put EarthQuaker Devices Night Wire after Walrus Audio Power 15 in the signal chain, clear of Walrus Audio Power 15's own gain stage

Electro-Harmonix Stereo Pulsar

Keep Walrus Audio Power 15's analog warmth voice out front: Electro-Harmonix Stereo Pulsar goes after Walrus Audio Power 15 in the signal chain so its analog warmth voice doesn't muddy it