Xploration • Curation • Recommendation
4 years after the release of the Chief Disruptor Fundamental Fuzz / Distortion, KMA Machines now unleashes a unique blackout colourway Bloodstone Edition of just 100 Units
Key Points
KMA Machines’ Bloodstone Edition Chief Disruptor is a blackout colourway limited to 100 units; internals identical to the original Chief Disruptor (an evolution of the Dead Stag).
Big Muff–style fuzz/distortion with switchable 3‑way gain (Vintage/Tight/Heavy), pre/post Clean Blend, active Bass/Treble, parametric Mid EQ (foot-switchable, frequency and internal Q control), Top Boost (On/Off), External Expression input, relay soft‑switching. Works equally well on bass; made in Berlin.
Powered by 9 V DC (centre‑negative, 2.1 mm), >160 mA. As of 2026-07-16, the price was £159; available only from the KMA Machines webstore.
This is one of my two most favoured extended range Muffs - alongside TX Pedals’ Animalizzer. I first reviewed the Chief Disruptor back in January of 2022 - where that was a massively evolved and improved take of its Dead Stag Predecessor.
This new Bloodstone Edition has the exact same insides as the original Chief Disruptor - just with that more doomy all-black / blackout Bloodstone colourway - which some will undoubtedly prefer. I’m of course tempted, but I’m loath to double down on pedals I already have - when my infinite wishlist is as long as it is. I actually still really love my original colourway artwork - and would struggle with choosing between that and this black edition - both are worthy!
Controls - Voicing / Gain Structure : Tight / Vintage / Heavy, Lows, Highs, Blend Order : Pre-EQ / Post-EQ, Master Volume (Level), Disruption (Gain), Clean Blend, Mids Cut / Boost, Top Boost : Off / On, Mids Frequency, Mids On Footswitch, Engage / Bypass Footswitch.
You get vastly extended EQ here compared to the typical muff - including Parametric Mids, and placement of those in the signal chain. Also 3-way Gain Structure, Clean Blend, and Top Boost - and with the Mids foot-switchable too for a sort of solo boost action.
All-round a fantastic extended range Big Muff - which works equally great on Bass!
Pricing is discounted too - at just €179 / $219 / £159 / $249 CAD / $349 AUD - only available direct from the KMA Machines Webstore!
With only 100 units available - these are likely to be snapped up really quickly! So best get your skates on if you want one!
Key Features
- Custom black finish, with red highlights
- Limited to 100 units
- Fuzz/Distortion Pedal with Switchable Gain Structure
- Mid EQ/Boost
- The ultimate ‘muff-style’ drive, with stacked topology
- 3 distinctive gain structures :
- Vintage (dynamic)
- Tight (more focussed)
- Heavy (sustaining and thick)
- Pre or Post Clean Blend, for a tight low end
- Active Bass and Treble EQ
- Separate Mid EQ, with footswitch and frequency control
- Top-Boost, for more crunchy harmonics
- External Expression control, allows for filter or pseudo-phase tones
- Internal controls for Mid Q and Top Boost Level
- Relay-based soft-switching
- Made in Berlin, Germany
- Powered by regular PSU - 9 V DC, centre -, 2.1 mm, >160 mA max. current draw (not supplied)
- RRP / MAP - €179 / $219 / £159 / $249 CAD / $349 AUD
Launch Video
