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EarthQuaker Devices Data Corrupter Modulated Monophonic Harmonizing PLL

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Modulated Monophonic Harmonizing PLL

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 Corrupters 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 Corrupters 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 Oscillators 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 Mixers 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.

Hear the Data Corrupter on SoundCloud.

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.

Dimensions: 5.65″ x 4.65″ x 2.25″ with knobs
Power: The Data Corrupter should be powered by a standard 9-volt DC power supply with a 2.1mm negative center barrel (not included)
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.

unpredictable but not uncontrollable2 of 2 customers found this review helpful

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Product ExperienceI own it
Closest StoreCalgary Chinook, Alberta
this thing is a monster. it has a ton of different settings and can go from gross and weird to disgusting and nearly incomprehensible. to begin with it's quite sensitive to input so the same settings can give expressive results based on how you play, pickup settings, tone knob... if you dial in just the square tone and nothing else, you get a brutal gated fuzz tone with no controls (just the volume). start bringing in the other two oscs and you can get freaked out subs and harmonies that eat at eachother and decay into chaotic dropping zipper tones. the sub osc can be set to follow the master or follow the input so you can get a nasty fuzz tone with a mean sub octave that's almost like a weirdly slightly busted meatbox that has some feedback loop going on. if you want something easy to use this isn't it. you'll have to sit and tweak this thing, see how it reacts, and it is a noisy beast. if you want something weird and unique, this is it.
Posted by anonymous on Jul 15, 2019
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EarthQuaker Devices Data Corrupter Modulated Monophonic PLL Harmonizer