Skip to content
Everything In Music - Since 1958
Everything In Music - Since 1958

EarthQuaker Devices Data Corrupter Modulated Monophonic Harmonizing PLL Pedal

Original price $0.00 - Original price $0.00
Original price $0.00
$229.00
$229.00 - $229.00
Current price $229.00
Inventory Status:

♫ In stock
About Inventory Status


Questions?
Call or text us at 301-946-8808.

In stock: It is in stock and available to ship or pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.

📆 Preorder: It is on the way to our warehouse. We can't predict when preorder items will arrive due to current supply chain issues. If you place an order for one of these items someone will contact you to estimate the delivery date.

Out of stock: We don't currently have it available but you're not out of luck yet. We still may be able to get it. If you order one of these items we will contact you with an estimated fulfillment date. You have the option to cancel the order if you change your mind.

Special order: The item is so special that it needs to be custom ordered for you. Some of these items are works of art and have to be made individually. Orders for special order items must be prepaid and we cannot accept cancellations or refunds.

█ Sold out: We don't think we can get this item because it was either discontinued by the manufacturer or was limited in quantity. If you want or need this item call or text us. Sometimes we can help you track down the item through other sources or help you find something similar.

About Item Conditions


Questions?
Call or text us at 301-946-8808.

New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.

Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.

Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.

Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.

Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.

B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.


Get Out Of This World Sounds With The EarthQuaker Devices Data Corrupter Modulated Monophonic Harmonizing PLL Pedal

Okay Brainiac, it’s time to put down that graphing calculator and get to work decoding your brand new Data Corrupter!

The Data Corrupter is a monophonic analog harmonizing PLL with modulation. It takes your input signal and brutally amplifies it into a crushing square wave fuzz tone that is then multiplied, divided and modulated to create a wild, yet repeatable, three-voice guitar synthesizer.

The Master Oscillator is the central nervous system at the heart of the Data Corrupter’s cyberpunk hive mind. The three-position switch on the Master Oscillator control panel labeled Root feeds your input to the Data Corrupter’s signal harvester in its original octave (Unison), one octave down (-1) or two octaves down (-2). Use the Master Oscillator’s Root switch to fine tune the Data Corrupter’s tracking response for maximum compatibility with your preferred instrument and frequency register. Once you’ve chosen your input octave, the Data Corrupter will perform its calculations and spit out a synthesized frequency, the octave and/or interval of which may be selected via the Master Oscillator’s eight-position rotary switch. The Voice Mixer’s Oscillator control adjusts the Master Oscillator blend.

The Frequency Modulator applies pitch-bend modulation to the Master Oscillator. In Glide mode, you’ll hear a smooth portamento as each note slides into the next. In Vibrato mode the pitch modulates up and down for a retro sci-fi laser effect.

The Subharmonic assimilates the input signal into one of eight lower octave programs between one and three octaves below the original. For a more stable lower octave, set the Subharmonic’s Root switch to the Unison position, which divides the Square Wave input signal, and removes the Frequency Modulator from the Subharmonic signal path. To unleash the cracked machine lurking within the Data Corrupter mainframe, set the Subharmonic Root switch to Oscillator and try not to look away as the sonic malware you just installed mangles your input signal into the sum and difference of both the Master Oscillator and Subharmonic with the Frequency Modulator applied to the upper and lower octaves. If you think you’re brave enough, set the Subharmonic Root switch to Oscillator and try experimenting with different Master Oscillator and Subharmonic programs to wind up the doomsday clock and inch ever closer to the Singularity. Adjust the Voice Mixer’s Subharmonic control to set the lower octave volume.

Finally, (or is it?) the Square control located top-left on the Voice Mixer blends in a fuzzed-out square-wave take of your input in its original octave. That’s it. These aren’t the droids we’re looking for. Move along.

Each and every Data Corrupter is built one-at-a-time by a team of ensigns aboard the Starship Enterprise locked in orbit around the Borg Cube of Akron, Ohio, USA. Make it so. Engage.



Nerd Talk- The heart of this pedal is based around a CMOS Phase Locked Loop (PLL) IC. In a nutshell, the PLL takes your input signal and compares its phase and frequency against an oscillator, generates an output proportional to their difference then feeds it back to the oscillator. This then causes the oscillator to lock onto the input signal and generate a synthesized frequency. Pretty cool, right? This synthesized frequency is referred to as the Master Oscillator on the Data Corrupter.

Master Oscillator- The Master Oscillator takes it’s input from one of three sources: Unison, one octave down and two octaves down. Some frequencies are too high for the Master Oscillator to divide, therefore, shifting them down one or two octaves brings them back into the proper range (it also happens to sound super cool). These sources are referred to as “Root” and can be selected via a three-position switch. The Root is then fed into the PLL and multiplied to create one of eight different intervals over three octaves that are selected by the rotary switch to create your harmony! This harmony can then be manipulated via the Frequency Modulator section.

Frequency Modulator- The Frequency Modulator has two modes, Glide and Vibrato. In Glide mode, the pitch will glide from note to note and the speed of the glide can be adjusted by the Rate control. At faster settings, this takes on a very cool phase shifting effect. In Vibrato mode, the pitch varies up and down to create a laser-like effect. The Frequency Modulator only affects the Master Oscillator, unless the Subharmonic Root switch is in the Oscillator position.

Subharmonic- The Subharmonic section of the Data Corrupter creates a sub octave of the Root and then divides it up into eight intervals over three octaves which are selected by the rotary switch to create your subharmonic harmony. The Root comes from one of two sources, Unison or the Master Oscillator. When Unison is selected, the Subharmonic will be a division of the square wave fuzz tone and the Frequency Modulator will have no effect. When Oscillator is selected, the Subharmonic will be a division of the Master Oscillator and the Frequency Modulator will be applied to the Subharmonic harmony.

Voice Mixer and Level- The Master Oscillator, Subharmonic and Square wave fuzz tone all have volume controls under the voice mixer section. Use these to blend the three voices together to taste. The Level is a master volume and determines the overall output level of the effect.

Tracking- This pedal should be placed close to front of your signal chain and before any delay, reverb or modulation effect. While it will work with most bridge pickups, the neck pickup will provide the best tracking results. Precise picking and single notes will track quickly and cleanly. Chords and sloppy playing will result in chaos. There is no control over the amount of gain because it really needs to be fine-tuned to properly track. Weak signals (like backing off on the guitar volume) will lead to poor tracking and gating.

Design Notes- This Device takes its inspiration from the Electrax Synthax and the “Basic Frequency Synthesizer” by Ray Marston. Neither of these were really intended to be guitar effect pedals and a lot of work went into creating the Data Corrupter to provide excellent tracking and long sustain. We think you’ll find it more expressive and accurate than pretty much any other PLL based effect pedal around.



Measures: 5.65" x 4.75″ x 2.25″ with knobs

Power: The Data Corrupter should be powered a standard 9-volt DC power supply with a 2.1mm negative center barrel. Pedal-specific, transformer-isolated wall-wart power supplies or multiple isolated-output supplies are recommended. 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!

Current Draw: 25mA

Input impedance: 1M

Output impedance: 1K

Switching: This device is true bypass and uses electronic relay based switching. Audio will not pass without power.

Manufacturer: EarthQuaker Devices
Model: EQDDATA
SKU: I495376-N-2-WHXB
UPC: 855755007060


We are Chuck Levin's Washington Music Center

Maryland, Virginia, and Washington DC's legendary music shop. Family-owned and operated since 1958. Buy gear the way it was meant to be bought, from a store that's been there through it all and has the vibe to prove it. We're staffed with musicians and industry experts, people that live and breathe music gear. Our mission is to help you find the right gear for your project, that thing that will bring you the most joy out of what you do. We're an authorized dealer for almost every brand, we stock items the other stores don't, so you can try before you buy. Stop by our Wheaton, MD showroom and see for yourself.

Contact us if you have questions about one of our listings or if you need help finding the right piece of gear.