Phaser block

The information on this page supplements the official manuals.

Phaser: supported by which Fractal Audio products?

• Axe-Fx II: yes.
• AX8: yes.
• FX8: yes.

X/Y switching in the Phaser block

The Phaser block in the Axe-Fx II, AX8 and FX8 supports X/Y switching.

Phaser: mono or stereo output

Phaser defaults to mono to prevent phase problems when used before an Amp block. To make it stereo, change the LFO Phase setting and place it after Drive, Amp and (mono) Cab.

Feedback Tap parameter in the Phaser block

Fractal Audio:
"There is no feedback on a Script 90." source

Prevent thump when engaging the Phaser

If engaging/bypassing the Phaser block causes an audible thump or gap, change input impedance to 1M (Axe-Fx II and FX8).

Control the start of the Phaser sweep

Use the parameter “LFO Bypass Reset”. When set to anything other than “Off”, the LFO will be reset to the selected phase whenever the block is bypassed. This allows synchronizing the sweep to the engagement of the effect.

Create an Uni-vibe effect

The Vibe effect is available as a special mode of the Phaser block. Set Vibe Mode to On (or select the Classic Vibe type). The default settings are modeled after the Fulltone Deja-Vibe. source

Fractal Audio:
"You need it before the amp if you want the bump." source

Tip: connect a pedal or switch (via an external controller) to the Rate parameter to control speed.

Robin Trower vibe settings

More information about the Uni-Vibe

Barber Pole Phaser type

This phaser type works best when placed at the end of the chain.

More information

• Phaser in Wikipedia
• Uni-Vibe in Wikipedia