Pedals that stack with the Alchemy Audio Phasor II

Univox Super-Fuzz

Univox Super-Fuzz's own octave character is the real reason this is worth trying

ZVEX Fuzz Factory

Run the Phasor II ahead of the Fuzz Factory's gated, glitchy germanium fuzz so the phase sweep still tracks a clean signal before the gate chops it up.

Crazy Tube Circuits Splash MKIV Reverb

Put the Splash's surf-voiced spring reverb after the Phasor II's optical sweep, not before, so the phase modulation doesn't wash out in the reverb tail. — goes in the amp's FX loop (or last, into a clean amp)

Crazy Tube Circuits White Whale

Run the White Whale's tank-voiced reverb after the Phasor II in the chain — the phaser's sweep stays defined instead of blurring into the reverb's own harmonic wash. — goes in the amp's FX loop (or last, into a clean amp)