Pedals that stack with the Valco Black Hole Vintage Phaser

Wren and Cuff Box of War Small Foot Fuzz

Wren and Cuff Box of War Small Foot Fuzz stacks high gain on top of the mid-forward already here

Greer Black Mountain

Greer Black Mountain layers fuzzy onto an already mid-forward signal

Red Witch Titan

Put Red Witch Titan after Valco Black Hole Vintage Phaser in the signal chain, clear of Valco Black Hole Vintage Phaser's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

EarthQuaker Devices Afterneath

Put EarthQuaker Devices Afterneath after Valco Black Hole Vintage Phaser in the signal chain, clear of Valco Black Hole Vintage Phaser's own gain stage — goes in the amp's FX loop (or last, into a clean amp)