
More than
just a phase
A simple concept, multiplied, expanded, and pushed to the outer limits.
2 sweep generators
It all starts with 2 Independent LFOs, featuring switchable waveforms and rates that can be tempo synced. Tweak both in tandem for unpredictable interplay, resulting in all manner of animated sounds.
Dual 12-stage Phasor circuits
As well as 2 LFOs, you get 2 ‘Phasor’ circuits to play with, with independent depth, feedback and modulation source controls.
Analog character
We analyzed the much-loved tonal nuances of the original pedal, taking extra care to emulate them in great detail for a perfectly authentic response.
Manual pedal control
The expression pedal feature lets you manipulate both LFO rates and both Phasor circuits, with the additional option of envelope control.
Choose your route
Phaser BI-TRON can be run in mono or stereo, series or parallel. This results in an unprecedented stereo modulation palette, each mode offering a distinct sonic character.
Presets
A curated selection of 37 presets, giving you instant access to the double-barrelled energy of Phaser BI-TRON.
Rebuilding
a legend
The humble phaser was one of the first widely-available guitar effects on the market.
Achieved by the relatively simple means of modulating all-pass filters on an input signal, it’s a sound that’s as recognisable as it is divisive. No modulation collection is complete without a phaser - and as the world’s first dual phaser, the Mu-Tron Bi-Phase stood out from the crowd. Popularised by everyone from Smashing Pumpkins to Prince, Kraftwerk to Chromeo, it’s evident that the pull of stereo functionality, interweaving modulation, and analog charm was impossible to resist.
We set about studying, remaking, and enhancing this prized handmade effect. Using our proprietary TAE® technology (True Analog Emulation), we wanted to replicate every subtle detail, every sonic trait - even the control panel and expression pedal functionality. Phaser BI-TRON is every bit an analog dream, primed for your virtual studio.

The power
of duality
The key to Phaser BI-TRON’s colorful sound is the fact that everything is doubled.

Analog
enhanced
The magic of the dual LFO & dual Phasor setup really comes into its own with the elaborate routing options.
Cherub riffs
Rhythm in orbit
Ozone layers
Guitar goes boing
Phased and confused
Up
to speed
A timeless guitar effect, reimagined to cater to the modern producer, the adventurous musician, the contemporary audiophile.
Phaser BI-TRON doesn’t just capture the allure of the old-school - it ventures beyond to bring you something entirely new and wholly inspiring.
Beneath the surface, you’ll find additional controls for further manipulation.

Artist
Corner
Thiago Baggio
Recording & Mixing Engineer
"I can remember the first time I saw this phaser on a pedalboard and fell in love with it. It’s amazing that I can now use it with ease without the need of a re-amp box and other accessories. It’s right there, ready to go. "
Cecil Bartlett
Producer / Mixer / Engineer
"The Phaser BI-TRON is an absolute classic for adding space to synths and drum machines, has all the feel of the real one but I love being able to automate it to the nines right up until the mix is printed. "
Included in
FX collection
Effects you'll actually use
This effect is part of FX Collection, a suite of essential audio effect plugins empowering musicians, producers, and artists to get creative with their production. From iconic recording gear modeled with breathtaking accuracy, to cutting-edge contemporary effects, the collection includes the most fought-after studio tools, rare guitar pedals, modern mix enhancers, and beyond. Elevate your production and add color to your mix like never before.

The features
you need

TAE® Powered
The exclusive analog modeling technology that makes our emulations indistinguishable from the originals.
By accurately mimicking the characteristics of analog oscillators, filters, and soft clipping, we can provide astonishing component-accurate detail and authentic analog charm in equal measure.

Gallery
Main Features
All-encompassing dual phaser with glorious stereo sound and enhanced controls
Circuit-accurate sound emulation for rich analog response
2 sweep generators (LFOs), each with 3 waveforms to choose from
2 independent 12-pole 'Phasor' circuits with depth, feedback and mod source controls
Dual depth controls on each 'Phasor' circuit, corresponding to both sweep generators
Arturia's advanced features enhancing the original unit:
Advanced routing for mono, stereo, series or parallel operation
12dB/oct Hi-pass filter on input signal
‘Phasor’ poles increased from 6 to 12
Expression pedal/envelope feature can control LFO rates, ‘Phasor’ circuits
Stereo reverse option on each ‘Phasor’ module
Sweep generators can be tempo sync'd
Individual 'Phasor' circuit bypass and dry/wet controls
A selection of 37 curated presets for instant iconic modulation sounds

