My most popular fuzz pedal, formerly known as the KO Sound Fuzz.  Based on a silicon tone bender mkII with an added tone control.  Built with specially selected BC108 silicon transistors and some circuit tweaks to make it sound just like good old germanium for that vintage tone with reliable performance.  

Demo by HarryAndAGuitar

Demo by Matt Foy

Product Page

KOSound Fuzz

Being the Black Keys fan that I am, I had to do a clone of the Maestro MFZ-1.  As heard on 'The big come up' album, it's full of fat fuzzy goodness.  True bypass with polarity protection, like all my mini pedals runs off 9v adapter only (center negative 2.1mm).  Available in both 1590A and 1590B sizes.  Current draw ~1mA.​  

Demo by Kevin O'Reilly

Demo by Tone Rocks

Key Fuzz

The KOi overdrive is based on a popluar d-style overdrive but in a 1590A or 1590B sized enclosure with a few improvements.  Has more gain, altered tone control and picks up less radio stations than the original but with the same tasty mosfet clipping and cool voice control.   Demo vids Below, check 'em out. 

Demo by Andrew Johnston

Demo by Curtis Kent

Koi Overdrive

A highly modified Shin-ei Companion fuzz.  Has a voice control to shift the midrange frequency scoop and a treble control to tame the highs.  Full fuzz all the time and a built in volume boost to go above unity volume.  Internal removable jumper that cuts the bass and gain to make it more useable for guitar.  Shines on bass.  True bypass with polarity protection

Ko. 31 Fuzz - Purple

Based on the Dallas Rangemaster with a few mods.  Available in both Silicon and Germanium versions. Very versatile for such a small package with three knobs controlling bass, gain and volume.  Not the cleanest booster but that's not a bad thing. 

Featured Artists

Boost

Description

Media

Videos

Links

Technical data

More pedals from KO Amps

KO Amps

KOSound Fuzz

KO Amps

Key Fuzz

KO Amps

Koi Overdrive

KO Amps

Ko. 31 Fuzz - Purple

Products

Build your own board

Services

Community