Sub-Octave

SolidGoldFX Lysis MKII Polyphonic Octave Fuzz Modulator

RPS Effects Arcade Machine

Third Man Coppersound Triplegraph Octaver

Pigtronix Space Rip Analog Synth

SolidGoldFX EM-III Multi-Head Octave Echo

BOSS OC-5 Octave Pedal

Paradox Effects Obsidiana Octave Layering Engine

The Story of the Coppersound/Third Man Triplegraph

Redbeard Effects Honey Badger Octave Fuzz

SolidGoldFX Lysis – octave down fuzz with modulation

Catalinbread Coriolis Effect

Fuzzrocious Knob Jawn