Based on the famous Ibanez Standard fuzz with some mods to improve performance.  Includes a JFET input, a pair of germanium diodes and specially selected transistors for the rest of the circuit.  Modified so you get all the vintage tone with plenty of volume on tap.  Features a tone control knob that blends between a scooped mid range tone and a flat eq instead of the original switch for more versatility. 

KO Amps

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Demo by Curtis Kent

Demo by Kevin O'Reilly

10AM Auto Fuzz

A no nonsense workhorse overdrive with a traditional voicing to cover as much ground as possible.  Darker and smoother with more gain than the Ko. 10 or 14 Overdrives.  The tone control is a treble roll off like a rat to tame the highs. 

Demo by Minimalist Musician

Demo by  Kevin O'Reilly

12th St Overdrive

Straight up Big Muff clones in 1590A sized boxes.  Any style you'd like, ram's head, green Russian, custom or whatever.  True bypass with polarity protection, like all my mini pedals runs off 9v adapter only (center negative 2.1mm).  Current draw ~2mA.  I have two of my own versions, the 'Bullet' which has a lower gain mid range focused tone and the 'Rhino' which is super gainy and scooped sounding perfect for shoegaze.  Also available is the new 'Cherub' version which is based on the opamp muff as used by the Smashing Pumpkins.  Check out the comparison video below, featuring my original '96 bubble font green Russian.​

Demo by Matt Foy

Big Muff

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. 

Boost

Die KO Amps Bullet Fuzz ist ein Fuzz-Pedal, das eine Kopie des legendären Sovtek Green Russian Big Muff Fuzz ist. Es bietet einen authentischen, grünen Muff-Ton in einem kompakten 1590A-Gehäuse. Das Pedal ist in gutem Zustand und bietet eine Legit-Grün-Muff-Ton in einem kleinen Gehäuse.

The KO Amps Bullet Fuzz is a fuzz pedal that is a copy of the legendary Sovtek Green Russian Big Muff Fuzz. It offers an authentic, green muff tone in a compact 1590A package. The pedal is in good condition and offers a legit green muff tone in a small enclosure.