Walrus Audio Monument Harmonic Tap Tremolo Pedal


Walrus Audio are a fairly new brand in the pedal-building scene. However, in their short history they have delivered incredible-sounding and innovative pedal designs, with inspiring and artistic graphics that spice up the look of pedalboards around the world.

The Monument Harmonic Tap Tremolo is a hugely versatile pedal, with two tremolo modes and a range of controls that let you set your perfect tremolo sound.

Versatile Controls:

The Monument features traditional rate and depth controls, as well as a time division control to let you easily adjust the tremolo speed. The great thing with the Monument is that you can change the rhythm of the effect on the fly as well, thanks to the ergonomic ‘Tap’ footswitch. So if you’ve got a drummer with bad timing, you can use the Tap function to stay in-sync and sounding solid.

Use the shape knob to affect the waveform of the tremolo. The square wave causes a more ”stuttered” effect, while a sine wave is more subtle and smooth-sounding. But in true Walrus Audio style, they have added some more unique waveform patterns to the Monuments so you can get some experimental sounds.

Standard and Harmonic Modes:

A mini-toggle allows you to switch between Harmonic and Standard tremolo modes. In Standard mode you get a typical tremolo effect, but the Harmonic mode delivers a vintage-inspired Brownface-style tremolo effect with warm modulation. Essentially, your signal is split into 2, they are modulated opposite one another and put 180 degrees out-of-phase. This gives you a sweet chewy sound, great for old-school surf-style tones!

Here’s what Walrus Audio say about the Monument Harmonic Tap Tremolo Pedal:

Inspired by the beautifully jagged, red-sand desert landscape of Monument Valley, the Monument Tremolo is both a harmonic, and standard tremolo that produces a rich, luscious, warm pulsating modulation capable of peaks and valleys as smooth or as jagged as the real ones that our dear mother nature created long ago.

With different combinations of the rate, division and shape knobs and tap tempo, everything from traditional tremolo to inspiring unique waveforms will help you carve new paths that you won’t hear anywhere else.

Harken back to vintage tones inspired by Fender Brownface amps in Harmonic mode. A low-pass and high-pass version of your guitar signal are modulated opposite of each other, or 180º out of phase (high and low frequencies rise and fall opposite of each other). The result is a warm, almost “chewy” tremolo.

The Division knob can be set to quarter, triplet, eighth and sixteenth.

Wave shapes can be controlled via the Shape knob. You can move between Sine, Square, Ramp, Lumps and Monument Mode (random).

A special feature on the Monument is the bypass switch also has a momentary function. When the switch is in off position, press and hold to temporarily activate the effect to add a moment of texture. Releasing the switch turns the effect off.

Setting the depth knob at 0 and the volume knob above unity creates a clean boost.


  • Dimensions: 4.67” x 3.68” x 1.547”.
  • Power: 9VDC (100mA minimum)
  • The use of an isolated power supply is recommended for powering all Walrus Audio Pedals. Daisy chain power supplies are not recommended.
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