Walrus Audio Polychrome Analog Flanger review

This colorful pedal delivers many shades of flange

Walrus Audio Polychrome
(Image: © Future / Philip Barker)

Guitar World Verdict

If it's flanging you want, then the Polychrome is a class act: a veritable treasure trove of flanger sounds that will slot nicely onto your ’board.


  • +

    Momentary operation.

  • +

    Wide range of sounds.

  • +

    D-F-V knob to blend in your effect.


  • -

    No expression pedal input.

  • -

    Slight perceived volume loss on some settings.

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Walrus Audio has several modulation pedals in its roster, notably the Julia chorus and Lillian phaser, which both share similarities with the Polychrome, the brand’s new analog flanger.

In particular, all three pedals sport a Blend knob that moves from totally dry sound to 100 per cent wet. In this case, it’s labelled D-F-V (Dry, Flange, Vibrato) with the most traditional flanger tones at the 50/50 mix, 12 o’clock position, lots of subtler shadings to the left and true vibrato fully clockwise.

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Trevor Curwen

Trevor Curwen has played guitar for several decades – he's also mimed it on the UK's Top of the Pops. Much of his working life, though, has been spent behind the mixing desk, during which time he has built up a solid collection of the guitars, amps and pedals needed to cover just about any studio session. He writes pedal reviews for Guitarist and has contributed to Total Guitar, MusicRadar and Future Music among others.