The Supercool Pedals Triniphase Multi-Stage Phaser is an all-analog, OTA-based phaser effect released on 27 June 2025. It is based on the legendary Ross Phaser pedal, but with many modifications and setting options added, according to Pedal of the Day's review1. It belongs to the wider family of phaser pedals, which shift a copy of your signal through moving notch filters and blend it back with the dry sound.
Circuit and origins
The Triniphase uses an OTA-based circuit. OTA (operational transconductance amplifier) stages are the traditional building block of classic phasers, and the Ross design the Triniphase draws on is part of that lineage. Pedal of the Day, reviewing the modern Ross Phaser, describes it as "designed around an OTA-based circuit inspired by the legendary ROSS 'Era 2' design"2, and MusicRadar's Jonathan Horsley called the Ross phaser circuit "a repro of an old OTA-based Ross phaser circuit"3. The Triniphase takes that circuit as its starting point and adds modifications and setting options of its own1.
Controls and modes
The Triniphase's approach to control is its three stage buttons, which can be mixed and matched for phasing possibilities. Pedal of the Day's reviewer put it this way1:
"Mixing and matching the three buttons here gives you waaaaaay more possibilities than your typical phase effect"
The modes those buttons reach include untamed sweeps, Octo-Vibe tones and 8-stage phasing, while the pedal maintains the volume and tonal integrity of the instrument1.
What it sounds like
Pedal of the Day describes a wide range of sounds: "from psychedelic sweeps, to vintage [rotary speaker] spirals, voice-like formant [modulations], organic [vibratos], self-oscillation chaos and more"1. The reviewer's overall verdict was that within the pedal's few parameters lies "a cornucopia of amazing modulation sounds to explore", calling it a welcome addition to any modulation lover's pedalboard1.
Design
The enclosure's aesthetics are a nod to the classic Trinitron television sets popular in the 1980s and 1990s, which is also where the Triniphase name points1.
Videos
Supercool Pedals
Pedal of the Day and Supercool Pedals
Matt Foy
News
Questions
Is the Supercool Triniphase analog?
Yes. Pedal of the Day describes the Triniphase as an all-analog, OTA-based phaser effect. OTA (operational transconductance amplifier) stages are the classic building block of vintage phaser designs, and the Triniphase follows that approach rather than using digital processing.
What is the Triniphase based on?
The Triniphase is based on the legendary Ross Phaser pedal, but with many modifications and setting options added. The Ross circuit it draws from is an OTA-based design, the same topology that inspired the modern Ross Phaser reissue.
Does the Triniphase have an Octo-Vibe mode?
Yes. Pedal of the Day notes that the Triniphase moves easily from untamed sweeps to Octo-Vibe tones to 8-stage phasing, alongside a wide range of other sounds including psychedelic sweeps, rotary-speaker-style spirals, vibratos and self-oscillation chaos.
How many stages does the Triniphase offer?
The Triniphase offers up to 8-stage phasing, selected through three buttons that can be mixed and matched for a wide range of phasing possibilities beyond a typical phase effect.
Sources (3)
- Supercool Pedals Triniphase Multi-Stage Phaser, Pedal of the Day, 2025-06-27
- ROSS Phaser (2026), Pedal of the Day, 2026-08-21
- JHS Pedals resurrects the Ross Electronics brand and relaunches it with five new pedals, MusicRadar, 2023-08-15
