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Testimonials and user demos

More coming soon! If you've bought a Fredric Effects pedal in the past and would like to be featured on here please drop me a line.

Zombie Klone / Golden Eagle

Just gonna sing my praise on the zombie Klon. I've had mine about 6 months now. Every time i use it people ask me what it is and where i got it from. It has become my desert island pedal. Highly recommend it to any guitarist.
Richard Kennedy

I use it "front of chain", primarily for slight boost and the clarity it provides. Just makes everything sound better.

I got your zombie klon and I am so amazed at this pedal! I own an origanl klon centaur silver and it matches crazy well. Must have for Klon klone lovers one of the if not the best klon klone I have played and heard.
Phil Porter

Got one of these last week - worth every penny! Excellent on either end of the pedal chain (though I run it up front for a cleanish boost). Recommended!
Insubordination on TGP

I bought a Zombie Klone last week and last night A/B'd it with my mate's Silver Klon Centaur. If there are any difference in component/parts neither of us couldn't tell any difference between them. Nice pedal. Cheers.
Guitarhippy on Musicradar

Harmonic Percolator

Just wanted to let you know how much I love the Harmonic Percolator. Wow, wasn't expecting it to kick out so much level, great sound and sustain. I'm currently running my Burns Steer through it into a Mesa V Twin, modded Champ 600 with a custom built 2x10 cab(Jensen Ceramic and Alnico speakers) and it's awesome! It's already inspired two new songs :-)
Mark Wrangham | The Love Family

Unpleasant Companion

The Unpleasant Companion certainly lived up to its moniker. I like how it interacts and stacks with other distortion or fuzz pedals.
Jon Dean | Asleep

Green Russian Muff

The Green Muff has been a big hit - we've used it all over songs we've been recording for the 3rd Victorian English Gentleman's Club album and the 2nd Strange News From Another Star EP.
Charlie Francis | Producer/Engineer/Musician - REM, Future of the Left | Music Box Studios

I Got Me A Pocket Weasel

OMG i just got me a Pocket weasel and this little thing just squeals when you dial in the right filtered frequency for the occasion. This little jem can coax the perfect feedback from your rig. I love it!!!!! Strat - Pocket weasel - Plexi = Bedlam = lovely : )
Dominic Drury

Scrambled Brainz and Unpleasant Companion (v2 w/ muff tone control)

To my ears your companion sounds just like the original, glad I didn't hand over £250 for the real thing now! The modded tone stack really makes it a lot more versatile (the knobs on the old one did virtually nothing!) I didn't really know much about the scrambler so bought it on a bit of a whim, i've immediatly fallen for it, it's one of the most touch sensitive fuzz boxes i've ever used, really responds to pick attack well. Also stacks well with other fuzz boxes, the blend knob is super useful for this.
Josh Humphries | weareangles

Green Russian Muff

The last ten years of my life have been a constant search for the most evil bass distortion in existence. The quest is finally over. I take this thing in the bath with me. The Fredric effects Green Muff is sonic pornography for the pervert with highly specialist tastes.
Dan Raven | Bassist with Gundogs (

Grumbly Wolf MkI (grey fabric)

OK, this is rather pretty... a custom MXR Distortion Plus clone with canvas cover which is stencilled & lacquered. It has an extra switch to bring in a 'Green Ringer' ring modulator. With the ring mod off, the D-plus distortion circuit is very close to my original 80's MXR version, but has more volume and is a tiny bit less hissy. The red "wolf's eye" lights up brighter as you play harder and the distortion only really takes on a distinct character when cranking the drive past 3 o'clock. Excellent Husker Du / Sugar tones, especially with a Lace Sensor equipped guitar. Switching in the ring mod turns this into a metallic, clanging monster. It's even more extreme when using the piezo output on my Jazzmaster... just tapping the body / bridge / tremolo sounds like a scrapyard being dropped on another scrapyard.
Guy | Distant Guns (

Custom Harmonic Percolator (one knob, full gain, no LED)

I have been messing about with the pedal for a few weeks. The pedal is great, it is a LOT !! quieter than the [other commonly available] version. It is also very flexible, as it is able to go from slightly overdriven to nuts by just turning up the guitar volume. The two different modes is also a nice touch. Overall I am very happy with it. Good work!
John Newman

Atomic Clock

I've been using the grumbly wolves and the atomic clocks. The wolves are very cool in the upper register. The clock is over the top cool.
Doug Newman (demo here:

Green Russian Muff

The best sounding, smallest, and cheapest Big Muff ever!!! Simply spectacular!!!
Marco Baravelli

Harmonic Percolator

The Fredric Effects Harmonic Percolator is a fantastic pedal.

It is compact, versatile, and great sounding. All the way up, the harmonics are rich and respond really well to your playing, the sound you get is a really open and dirty sounding, and great for riffs or chords. back of the harmonics a bit, and you get a penetrating lead tone, with sizzling harmonics, that really demonstrate well how a Percolator is meant to sound. Where as most high gain pedals fail miserably to cut through in a band situation, this HP clone manages to combine a face raping fuzz sound with the ability to stand out in the mix live.

The real strength of this pedal however is the ability to disengage the germanium clipping diodes. When this is done you get a sound more akin to an overdrive boost, but with a gritty quality that most overdrives just cannot do. This open graininess is what sets the Fredric Effects Harmonic Percolator above other clones i have heard. The versatility, usability and sheer musicality of this sound will blow you away.

Importantly, the Fredric Effects Harmonic Percolator is quiet when you are not playing. It also responds really well to being pushed with overdrive/boost pedals. It can go from subtle lo-fi grainy overdrive to shit-i-think-my-amp-is-broken type all out fuzz. Obviously, a harmonic percolator is a harmonic percolator and is not designed to give you warm creamy tones, instead offering a uniquely angular vibe. If you are bored of the bland guitar sounds that we are inundated with on the TV and radio, and want to push your tone and playing in a more interesting direction, i cannot recommend the Fredric Effects HP clone highly enough!
Tom Adams (

Utility Perkolator

Just got the pedal. Bloody Hell is it awesome! ;-)
Ravi Parsan

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