Xploration • Curation • Recommendation
A selection of 7 of the best Gehirn Enterprises Compact Pedals - out of Tasmania
Key Points
Gehirn Enterprises (Brendan Pearce) of Tasmania makes 16 pedals (10 Compacts). Seven Compact models covered here include PLL, octave, Model‑T, sub‑octave, noise and PT2399 delay types.
As of 2026-07-13, the price was £100 for Binary Eruptor; £100 for DoomedLife; £88 for DoomLord; £100 for Nocturnal Razer; £75 for Noise Wasp; £100 for Pitch Druid; £63 for ZERSTÖRER. https://soundcloud.com/user-806469470/pitch-druid-demo
Use code 'DOOM' for 20% off (until end of play Sunday). For electrical safety or opening/modifying a pedal, consult a qualified tech.
This Tasmanian Brand Gehirn Enterprises (Gehirn meaning brain!) - AKA one Brendan Pearce - only came to my attention relatively recently - while these are exactly the kinds of pedals that I gravitate towards. There’s a few takes here of certain well-loved circuits - where Brendan has a really unique approach o each of them - and all his pedals are very distinct and features several deft detail touches.
I consider myself very much a fuller flavour noise-maker - and there are several killer noisemaker pedals here - including the Noise Wasp, and ZERSTÖRER, as well as an incredibly wayward PT2399 Delay Line Modulator - in the best possible way - which delivers its own entire extended library of effects.
These Compacts range in price from $125 to $200 AUD, which is $83 to $133 USD or £63 to £100 - exceptional value for such expanded range circuits.
Brendan has quite the selection already - with 16 pedals is the range - 10 Compacts (7 of those featured here), 5 Mid-Size (1590BB ish), and 1 large. The overall range covers a span of $125 to $666 AUD, $83 to $443 USD, and £63 to £332.
There really is a lot to like here - including those very finely cut out facia plates!
Brendan seemingly makes each design in various colorways, where presumably these are mostly built to order seemingly.
I focus on 7 Compact Pedals that caught my eye, some variants seem to be sold out - but that’s likely because of the largely made-to-order mechanic - I tried to pick out my favourite colourways - which were also selected in part for their contrasting colours!
These are the 7 that make up the selection - you can check out the Gehirn Webstore - and then contact Brendan (gehirnenterprises@outlook.com) where there’s not one in stock of the type you’re after.
- Binary Eruptor = PLL Fuzz Harmonizer - $200 AUD, $133 USD, £100
- DoomedLife Octave + Rat + Boost 3-in-1 Monster (Life Pedal) - $200 AUD, $133 USD, £100
- DoomLord Sunn Model-T Transistor Preamp - $175 AUD / $117 USD / £88
- Nocturnal Razer Sub-Octave Fuzz - $200 AUD, $133 USD, £100
- Noise Wasp Fuzz + Noise Maker - $150 AUD, $100 USD, £75
- Pitch Druid PT2399 Modulation Speed Tap Tempo Wobbly Delay Line Modulator - $200 AUD, $133 USD, £100
- Zwergwirken Apparat Monströs ZERSTÖRER CMOS Hex Fuzz / Noise Pedal - $125 AUD, $83 USD, £63
I like all of those - and it’s a struggle really to pick out priorities - while I would probably go for the 3 mentioned in the intro - the 2 specific ’Noise-Maker’ pedals, and the insanely good Wobbly Delay Line Modulator / Manipulator!
As I have detailed several time this month - around 30 pedals have been acquired in October - a handful with November launch deadlines - while most of them have been featured this month. I had already blown the budge for the month when I attended the second Woking Boutique Guiar Show on the 11th. So I’m alas not in the position where I can be adding new pedals - at least for a week!
I will be following up with Bredan - with a view to review and feature some or all of these in a coordinated manner - starting with the crazier effects!
And I may tackle Brendand’s larger pedal at a separate time!
Brendan has given us a further bonus of a 20% Discount using the code ’DOOM’ - until his end of play on Sunday. These were already bargains at their original prices - where they’re almost a give now.
I look forward to landing mine in due time - there are exceptional pedals - which have been cruelly off most people’s radars. These deserve to do really well!
Just for further reference - you should use the CODE ’DOOM’ on the Gehirn Enterprises Webstore!
Further details on each pedal - controls etc. below :
Binary Eruptor PLL Fuzz Harmonizer - $200 AUD, $133 USD, £100
Controls - Sub, Fuzz, PLL, Divide, Modulation Rate, Multiply, Sub Root Switch, Vibrato / Glide Switch, PLL Root Switch.
I'm a significant fan of PLL pedals and own about half a dozen different varieties - where my reigning champion is still the Tark Audio Squid Ink. I would love to test the mettle of this Binary Eruptor which also feels pretty special. We'll soon see how much of a challenger this one is!
DoomedLife Octave + Rat + Boost 3-in-1 Monster (Life Pedal) - $200 AUD, $133 USD, £100
Controls - Distortion, Filter, Volume, Boost, Ruetz Mod Switch : 47R, 47R Disconnected / Internal Trimmer, Clip Switch (can be Germanium or Silicon Diodes, or Asymmetrical Silicon, or LEDs - typically Silicon / None / Asymmetrical), Octave Switch, Octave Intensity, Boos Footswitch, Bypass Footswitch.
A distinct take on the Sunn O))) Life Pedal. I have a few compact variants of this core effect already- including from Demiurge, and Sentimental Bob Electronics - also the MKII official EQD one - the DoomedLife looks like another excellent derivation / evolution.
DoomLord Sunn Model-T Transistor Preamp - $175 AUD / $117 USD / £88
Controls - Volume, Normal (Channel), Bright (Bright), Bass, Mids, Treble, Bridge Switch : On (Both channels), Boost Switch : On, Channel : Normal / Bright.
A rare Model-T compact - again of which I own a few varieties - including from Coda Effects, Kuro Custom Audio, and Zander Circuitry. Another one that would be great to compare and contrast. I have a few mid-size examples of this circuit also.
Nocturnal Razer Sub-Octave Fuzz - $200 AUD, $133 USD, £100
Controls - Volume, Mix : Octave > Pulse, Sub-Octave : -1 / -2 / -3 / Off, Unity Voice Switch = Fuzz On, Pulse Tremolo : 1 / 2 / 3 / Off, Bypass Footswitch, Raiser (Normal) / Razer (Insane) Footswitch.
This one seems pretty unique - combining that Crushing Sub-Ocave Fuzz with a cool Pulsating Tremolo - a very distinct and intriguing circuit with some smart controls. Looking forward to putting this one through its paces!
Noise Wasp Fuzz + Noise Maker - $150 AUD, $100 USD, £75
Controls - Gate, Wasp : Fuzz > Distortion > Noise, Low Input, Volume, SOS (Feedback Loop), Tone, Postgain, Postclip Switch : LED / Off / Silicon, SOS Switch ; On/Off, PreClip Switch : LED / Off / Silicon, Pregain.
The first of the Noise-Makers here - which I'm very keen to get my hands on. I really like extreme and industrial strength sounds - and feel this one is going to become a quick favourite of mine! CMOS circuits can get very wild - and this one's wholly unleashed!
Pitch Druid PT2399 Modulation-Speed Tap-Tempo Wobbly Delay Line Modulator - $200 AUD, $133 USD, £100
Controls - Depth, Speed, Wave (8 x Waveforms including Sine, Triangle, Square, and Random Slopes, Delay, Feedback, Blend, Tap Tempo Modulation Speed Footswitch, Engage Footswitch.
Some of this is a little reminiscent of the Fjord Fuzz Loke Delay Line Manipulator - but somewhat wilder and more extreme - as Brendan writes - it covers a lot of feautures :
"So it does so much I can't write it all in paragraphs. Here's a list:
Chorus sounds, Vibrato sounds, Analog delay sounds, Tape delay sounds, Modulated delay sounds, Self Oscillation, Noise, S&H, Ring mod esq sounds, Wacky pitch shifting, subtle pitch shifting, randomized delay times, tap tempo control, randomized modulation, CLK sync, LFO out, and MORE !!"
There's also a great demo on Soundcloud! :
Zwergwirken Apparat Monströs ZERSTÖRER CMOS Hex Fuzz / Noise Pedal - $125 AUD, $83 USD, £63
Controls - Volume, Starve, In Cut, Tone, Pre-Gain, Drive.
Massively evolved from Dwarfcraft's The Great Destroyer - so much really that it's its own effect. It's the second of the Noise Makers I've listed here - where it reacts significantly to your guitar's controls - including Volume, Tone and Pickup Selector. A little reminiscent in its control aspect to Catalinbread's Antichthon - but with a much easier disruptive output - in the best possible Noise-Maker way!. A definite agent of chaos!
