Earthquaker Devices Aqueduct Vibrato


The Aqueduct from Earthquaker Devices is a vintage inspired pitch vibrato pedal with eight modulation modes for a wide variety of sounds.

In stock (can be backordered)

SKU: AQUEDUCT Categories: ,


Aqueduct is a vintage-inspired pitch vibrato with eight modulation modes delivering synth-like sonar pulses, touch-sensitive frequency modulation, gentle rolling pitch-wobbles, steady kosmische pulsations, rapid trills, slimy sonic squiggles, whammy bar wiggles, pitch bends, pseudo-flange, and anything else your pitch-warped brain can picture in your murky mind’s eye.


The controls are simple. Rate (1) adjusts the LFO speed which controls how quickly the pitch rises and falls. Depth (2) controls the LFO amplitude, adjusting the intensity of the vibrato effect. The rotary switch labeled Mode (3) selects between one of eight LFO waveshape and envelope combinations which drastically alter the character of the modulation and make Aqueduct adaptable to nearly any musical situation.


Sine: The smoothest and most subtle of all waveforms, sine waves are most commonly associated with classic amp-like vibrato. Plug in, turn on, and commence the Chooglin’.
Triangle: Triangle waves have a sharper rise and fall than sine waves with a more pronounced pitch bend at the peak of each LFO cycle.
Ramp: Like a triangle wave with a twist. The Ramp waveform has a sharp sonar pulse followed by a rapid downward slope with a synthesizer-like sustain and release. This is where things start to get a little weird.
Square: Square waves are the most rigid and abrupt of the waveforms. Rather than gliding smoothly between pitches, square waves produce an instant on-or-off transition between notes. Use this mode for trills when you get tired of doing hammer-ons and pull-offs.
Random: This waveform isn’t a waveform at all as much as it’s a drunken master of modulation who slurs your notes into an unpredictable assortment of greasy pitch-bends before disappearing at last call and leaving you stuck with the tab. It has a “warped record” effect at low Depth settings and becomes sloppier and more randomized as you increase the Depth control.
Env D: This is Envelope-Controlled Depth mode. The waveshape is set to a sine wave, the speed of which may be adjusted using the Rate control. The Depth control sets the sensitivity of the envelope – the point at which the effect kicks in as you play. In this mode, your pick attack sets the intensity of the modulation. The harder you dig in, the more pronounced the effect. Try it during your next motorik jam.
Env R: This is Envelope-Controlled Rate mode. In this mode, the input level (i.e. pick attack) controls the LFO rate. The LFO uses a sine waveshape. Play harder for faster modulation or lay low for slower modulation speeds. The Rate control adjusts the sensitivity of the envelope. Depth selects the LFO intensity.
Env P: This is Envelope-Controlled Pitch mode, which we’ve lovingly nicknamed “The My Bloody Valentine setting.” If your instrument doesn’t have a tremolo bar, it does now. In this mode, the LFO is set to a sine waveshape, and frequency modulation is controlled by the dynamics of your pick attack and not the LFO. Do yourself a favor and try this one with Flexi-Switching.
– Depth sets the wet/dry mix. This is the only mode that contains a wet/dry mix and may be set to taste to create touch-sensitive dynamic vibrato, chorus, flanger, or tactile pitch drops. Full counterclockwise is all dry, full clockwise is all wet. With this control set to noon you will get a 50/50 mix with a small amount of phase cancellation.
– Rate sets the sensitivity and overall range of the pitch bend.

Measures: 4.75″ x 2.50″ x 2.25″ with knobs
Current Draw: 68mA
Input Impedance: 1M Ohm
Output Impedance: <10K Ohm

This device features Flexi-Switch Technology! This relay-based, true bypass switching style allows you to simultaneously use momentary and latching style switching.

For standard latching operation, tap the footswitch once to activate the effect and then tap again to bypass.

For momentary operation, hold the footswitch down for as long as you’d like to use the effect. Once you release the switch the effect will be bypassed.

Since the switching is relay based, it requires power to pass signal.

This device takes a standard 9 volt DC power supply with a 2.1mm negative center barrel. We always recommend pedal-specific, transformer-isolated wall-wart power supplies or multiple isolated-output supplies. Pedals will make extra noise if there is ripple or unclean power. Switching-type power supplies, daisy chains and non-pedal specific power supplies do not filter dirty power as well and let through unwanted noise. Do not run at higher voltages!

This product is covered by a limited lifetime manufacturer warranty.

Although we are not authorised to determine if any repair is covered under warranty, if the item was purchased through World of Music, then we are often the best people to facilitate the claim for you and will do so as timely as possible. Warranty does not apply to cosmetic damage or faults that are a result of user neglect. Although your mate is really handy with a soldering iron, any product modification or home repair will also result in a void warranty.

Quite often, something perceived as a fault is as simple as a faulty cable or power issue so we always suggest checking over Frequently Asked Questions on the manufacturer website first. It can be a helpful approach to getting to the bottom of a problem and save you a lot of time in getting your gear back up and running!

This item ships via Australia Post; fully insured for your piece of mind. Orders require a signature on delivery and we suggest using an address where someone will be present for the speediest delivery time. For delivery attempts where no one is present, your order will be taken to your allocated Australia Post location for pickup. A card will be left with instructions of where and when you can collect your order.