Pedals that stack with the Vertex Ultra-Phonix

Ashdown Geezer Butler Signature

The transparent tone has headroom to spare — Ashdown Geezer Butler Signature gives it low gain to fill it with

Origin Effects DCX Boost

Into a transparent tone, Origin Effects DCX Boost brings the low gain it's missing

TC Electronic Stereo Chorus Flanger

TC Electronic Stereo Chorus Flanger's modulated voice goes after Vertex Ultra-Phonix in the signal chain — it's not there to compete with Vertex Ultra-Phonix's own transparent character

Pigtronix Philosopher's Tone Micro

Pigtronix Philosopher's Tone Micro's own sustaining character is the real reason this is worth trying

Strymon BigSky

Strymon BigSky's ambient voice goes after Vertex Ultra-Phonix in the signal chain — it's not there to compete with Vertex Ultra-Phonix's own transparent character — goes in the amp's FX loop (or last, into a clean amp)

Electro-Harmonix Memory Boy Analog Delay

Electro-Harmonix Memory Boy Analog Delay's modulated voice goes after Vertex Ultra-Phonix in the signal chain — it's not there to compete with Vertex Ultra-Phonix's own transparent character — goes in the amp's FX loop (or last, into a clean amp)