Quaverato Harmonic Tremolo Pedal

Rated 5.00 out of 5 based on 1 customer rating
(1 customer review)



Quaverato Harmonic Tremolo Pedal  combines many features to make a great sounding, versatile, and practical stompbox. Available as a DIY KIT or Ready-to-Play (select below).

  • Digitally controlled, all analog signal path combining maximum flexibility with great tone.
  • Both Traditional (In-Phase) and Harmonic (Out-Of-Phase) Tremolo modes
  • Up to 15dB of gain
  • Modulates the high and low frequencies independently for dynamic swirling effects
  • Extra internal controls allow for custom crossover frequency selection and individual HIGH and LOW signal path volume adjustment, for full tonal control
  • Bypass footswitch can be used as either a toggle or momentary switch
  • Plus all the usual:
    • LFO wave shape, rate, depth and spacing (aka wave form shift or duty cycle)
    • Tap Tempo footswitch and multiplier selection
    • Relay controlled, true-bypass switching scheme

See Demo Video below!

SKU: QUA Category: Tag:


  • Harmonic or Traditional tremolo
  • Harmonic Mix allows the HIGH and LOW frequency bands to be modulated independently
  • Adjustable harmonic crossover frequencies and individual volume controls for the HIGH and LOW signal paths for tonal control — the Quaverato can be adapted for use with guitar or bass
  • Relay-controlled true-bypass switching
  • Boost up to 15dB
  • Tap time with multiplier: 4:1,  3:1,  2:1,  1.5:1,  1:1, .5:1
  • Footswitch can engage the effect either as a toggle or as a momentary switch
  • All the usual LFO waveforms and controls: speed, depth, shape, and spacing (aka waveform shift, or duty cycle)
  • A MIDI upgrade kit is coming in late 2018
  • Sturdy 18 gauge steel enclosure
  • Robust polycarbonate label
  • Open source software so all you hackers can customize your tone!
Finish Galvanized steel
width 5″ (12.5 cm)
depth 4-3/16″ (10.5 cm)
height 2″ (5 cm)
weight 20 oz = 1.25 lb (565 g)
POWER REQUIREMENT 9V DC center-negative power supply, 60 mA

1 review for Quaverato Harmonic Tremolo Pedal

  1. Rated 5 out of 5

    Scott strange (verified owner)

    My unit was quickly shipped to Canada. Was very impressed with the thoroughness of the instructions and kit layout. Great design, easy to build, took me a few hours. Plugged it in first time to no effected signal, but discovered i had the DIP switches all off, so quickly got it working. Very versatile trem, great quality, beautiful look, great sound. Love the momentary mode, the soft touch relay switching. My only two issues were the color of the display LED’s, which i found look christmas-ey with the red/green so i changed mine. Also, i think having the volume control is a drawback, as i dont use a tremolo as a boost, i use a boost as a boost, so finding and mainting it at unity gain is rather a headache. I will probably find the right spot and glue it in place or disconnect the pot and put a trimmer inside.
    Would recommend using rotary switches for the multiplier and wave shape controls, but thats just my preference.
    Otherwise, incredible stuff you guys. Love it.

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What You WIll Need

    Here's what you will need to build the Quaverato Harmonic Tremolo Pedal KIT. (Of course, if you order the Ready-to-Play, all you need is an amp , a guitar or other instrument, and a 9V DC power supply.)  See also the online Quaverato Assembly Manual, available on the Documentation tab.
  • Digital multimeter
  • #2 Philips screw driver
  • Small flat-head screwdriver
  • Needle nose pliers
  • Wire strippers
  • Small diagonal-cutting or flush-cutting pliers
  • X-acto knife or hobby knife
  • 8mm, 10mm, and 5/8” sockets and driver; in a pinch, pliers may work as well.
  • Soldering iron (not a soldering gun, or a “cold heat” iron), good quality, 15-50 watt. An iron with a temperature control and a stand is best. Use a small or medium size tip, with conical or chisel shape.
  • Solder sucker or solder braid (optional, but very handy if you have to remove or repair any components!)
  • Damp sponge or dry solder-cleaning pad
  • Clamp or vise to hold the printed circuit board while soldering (optional, but handy)
  • Solder, 60/40 rosin core, small diameter
  • Rubbing alcohol and cleaning rag
  • Transparent tape or masking tape


  • Download the Manuals:
  • View Demo Video: