Pedals that stack with the MXR 20th Anniversary Zakk Wylde Signature Phaser

Wren and Cuff Box of War Small Foot Fuzz

Run mid-forward into Wren and Cuff Box of War Small Foot Fuzz for more high gain on top

Black Arts Toneworks LSTR Fuzz

Put Black Arts Toneworks LSTR Fuzz in front and the mid-forward tone leans further toward fuzzy

Red Witch Titan

Run Red Witch Titan after MXR 20th Anniversary Zakk Wylde Signature Phaser in the signal chain, clear of MXR 20th Anniversary Zakk Wylde Signature Phaser's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Boss DD-2 Digital Delay

Keep Boss DD-2 Digital Delay after MXR 20th Anniversary Zakk Wylde Signature Phaser in the signal chain, clear of MXR 20th Anniversary Zakk Wylde Signature Phaser's own gain stage — goes in the amp's FX loop (or last, into a clean amp)