Plugin interface — screenshot pending
Modulation

Phaser BI-TRON

Arturia

Where to get itAvailable from Arturiaarturia.com

The Phaser BI-TRON is a modulation plugin that emulates a sophisticated dual-circuit analog phaser pedal from the 1970s, combining two independent six-stage phase-shifting circuits with flexible control options. It delivers the characteristic "whoosh" sweeping effect by splitting the audio into two paths through all-pass filters that alter phase while preserving amplitude, then recombining them to create frequency cancellations. Unlike basic phasers, this unit supports feedback control for deeper effects, dual LFOs, and stereo configurations with independent circuit routing.

Written from the manual and checked against it. How we check

Key Features

01Dual independent six-stage phase-shifting circuits (Phasor A and Phasor B)
02Sweep Generators with sine, square, or ramp waveforms
03Poles control from 2 to 12 (default six, matching original hardware)
04Feedback control (0.00 to 10.0) for deeper phasing and resonance emphasis
05Depth controls (1.00 to 10.00) per engine with dual LFO modulation
06Pedal control with Manual mode and Envelope Follower (Attack/Release: 0.001–5.00 seconds)
07Four stereo routing modes: Mono Serial, Mono Parallel, Stereo Serial, Stereo Parallel
08Hi-Pass Filter (12 dB/oct) with independent polarity inversion (R.INV.) per LFO

Things to Try

  • 01Sync the Rate knobs to host tempo by pressing the eighth-note button and selecting a long sync value like 2 whole-notes for tempo-locked sweeping
  • 02Set Depth 1 to maximum in Phasor A and Depth 2 to maximum in Phasor B, then choose Stereo Parallel routing to increase stereo imaging
  • 03Enable the Envelope Follower by selecting Manual Off and Envelope Follower On, choose 'Input Phasor B' as the source, and adjust the Input and Comp controls until the orange graph is steady for responsive level-based modulation
  • 04Use the Hi-Pass Filter set below 1 kHz (e.g., on string sections playing chords) to 'sweeten' the phasing effect without affecting low-frequency punch
Formats
VSTVST3AUAAX

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Phaser BI-TRON by Arturia | Plugin Library