classic silky yet refined and modern distortion

Skreddy Pedals™ Cognitive Dissonance MkIV™:

Powerful and high gain while remaining tight and articulate, this fuzz pedal's versatility lends it to many different musical applications.

The Cognitive Dissonance MkIV retains excellent string separation in chords. Articulate, not too mushy; retains your attack and playing nuances at all levels of gain.

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Sounds so good, it's addictive

Kick it on and you'll instantly be inspired by this vintage-style, 4-silicon-transistor distortion / fuzz / sustain stompbox.  The Cognitive Dissonance's™ refined tone and precise response are products of years of research and experience in fuzz design.

The Scoop/Flat switch shifts the midrange content from lightly mid-scooped to just enough more mids to fill in the vocal frequency range in a natural way without altering the fundamental character.


Regular 9v negative ground, no special power requirements. 9v battery is not included. If you use a battery, then remember to un-plug the input cable from the pedal’s input jack when not in use to prevent draining (or you can also just plug in a power-supply, which disconnects the battery).

You may supply external power through an AC adapter. All Skreddy Pedals accept the industry-standard 9v DC plug (5.5mm barrel x 2.1mm center coax), negative tip. Please use a quality, regulated, filtered power supply.




"Hey Marc! The CDmk4 arrived save and sound and it's just fantastic. Thank you! The high sustain settings are great but what surprised me is that it's the first Muff style pedal I've used where I really enjoy the tones on the lower half of the gain range, and I've used a TON. Anyway, I just wanted to say thanks and to keep doing whatever it is you're doing!"


Sound Clips

Tinkercity Music

All original music, all guitars playing through Cognitive Dissonance MkIV

Pablo Padilla at L.A. Sound Design

playing thru the Skreddy Cognitive Dissonance into a Shin Clean Boost-----Boss CE-2W----Chase Tone Secret Preamp----Eventide H9---Free The Tone AS-1R. The amps are a Blankenship Twinplex and Diamond Spitfire in stereo.