“Monumentally flexible and practical”: Walrus Audio Monumental Harmonic Stereo Tremolo review

With full stereo and mono operation, programmable presets, selectable waveforms and tap tempo, the new Walrus Audio tremolo is monumental indeed

Walrus Audio Monument Harmonic Tap Tremolo V2
(Image: © Future / Phil Barker)

Guitar World Verdict

The Monumental is not cheap, but it should do just about everything that you’d want a tremolo pedal to do... Monumentally flexible and practical.


  • +

    More tremolo than you could ever want.

  • +

    Tap tempo.

  • +

    Programmable presets make life easier.

  • +

    Stereo operation.


  • -

    It is pricey.

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Walrus Audio doesn’t stand still, and the company likes to revisit its pedals with the aim of bringing out enhanced versions. The Julia chorus pedal led to the Julianna and the Slö reverb begat the Slöer; now we have the Monumental Harmonic Stereo Tremolo, based on its mono Monument sibling. 

The Monumental can accommodate mono, stereo in/stereo out and mono in/stereo out operation. It also sports three easily-recalled onboard presets and extends the Monument feature set by increasing the number of waveshapes and the timing divisions for the tap tempo footswitch which now, has a secondary function (when held) of ramping the tremolo speed up and down for rotary speaker style speed changes. 

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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.