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Phase28 PhaseShifter

Modern Phase Shifter


  • • Classical 2/4 Stage
  • • Up to 6/8 Stages
  • • Sync Mode

Video clips

Audio examples

Introducing PHASE28, a new phase shifter effect. The Stages selector gives you control of how many stages from 2 to 8. Use 4 for a classic 4-stage phaser, or 2 stages for subtle shimmer effects. You can increase the stages to 6 or 8 stages for new creative experiments.
Do you want high fidelity with shimmering and subtle underwater type tones, or to experiment with 6 or 8 stages? Try it today to find out what it can do for you!

Product details

"PHASE-TWO-EIGHT" - in name of device included range of phaser stages you can choose.


Basic phasers have at least two all-pass filters to create one notch and one peak for a 2-pole effect that creates 2 stages. Increasing the number of stages creates a stronger, more complex sound.

Phase effects are created by splitting audio signal into two paths; one with All-Pass filters and one with the original signal.
The All-Pass filter in one stage helps to create a NOTCH. When the original signal and the signal from the All-Pass filter are mixed, frequencies that are out of phase will cancel eachother out, creating the phaser’s characteristic Notches. When the original and delayed signals are "in phase" with each other, that frequency will be boosted to a higher level, creating a PEAK at that frequency.

STAGE number determines the number of notches and peaks in 360° phase-shifting. Peak or Notch have 180° shifting. Each "stage" in the effect adds more notches and peaks in the frequency response, giving more complexity to the sound.

The output can be fed back to the input for a more intense effect, creating resonance by emphasizing frequencies between notches. This involves feeding the output of the all-pass filter chain back to the input. At high settings, the effect will become highly resonant, similar to a WahWah effect. FEEDBACK can be inverted, creating another variant of the effect. FEEDBACK can be Inverted. Inverted signal is feedback into the effect, creating another variant of the effect.

DEPTH change the size of notches, governing how high the filter frequencies sweep. At lower settings the phaser will primarily affect bass frequencies, while at higher settings the phaser effect can sweep high into the treble range.

While Guitar pedal effects are usually mono, a stereo phaser applies the effect to left and right stereo inputs, or to a duplicated mono input, using two independent chains of all-pass filters. The two chains of filters are often modulated 180 degrees out of phase. This makes the left channel's notches and peaks sweep up while the right channel sweeps down, and vice versa, creating a richer phaser and a wider stereo image. On the PHASE28 this can be adjusted with the BODY parameter.

Try PHASE 28 PhaseShifter today!


v. 1.0.2: New knobs visual graphic


Phase28 Manual



Released: 2018-11-12
Version: 1.0.2