SKU: 26471373417
fredric pedals

fredric pedals Fredric Effects Utility Perkolator MKII

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Description

fredric pedals Fredric Effects Utility Perkolator MKIIFast Free Shipping No Taxes, Duties, Tariffs Free Returns $199 is your absolute final total here for the the Fredric Effects Utility Perkolator MKII pedal. This Utility Perkolator is Fredric's latest version of the highly sought after Harmonic Percolator from the 1970s, made famous by Steve Albini of Shellac. This MKII version pedal comes in a new triangular wedge enclosure and has some new features added as well. They added a ring modulator switch,

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$199 is your absolute final/total here for the the Fredric Effects Utility Perkolator MKII pedal.

This Utility Perkolator is Fredric's latest version of the highly sought-after Harmonic Percolator from the 1970s, made famous by Steve Albini of Shellac.

This MKII version pedal comes in a new triangular wedge enclosure and has some new features added as well. They added a ring modulator switch, for octavey/splattery overtones. This ring circuit is closely related to the vintage Dan Armstrong Green Ringer effect. Also, on the inside of the pedal, you will find 2 dip switches on the circuit board, to remove the low pass filter if desired (see "CONTROLS" below for details).

Demo Video:
Check out the awesome pedal demo video on this page.
Many thanks to Regent Sounds in London for this video!

 

Before we get way into the Utility Perkolator MKII, the next 2 paragraphs simplify the difference between the Fredric Effects Harmonic Percolator and their Utility Perkolator:

Fredric Effects Harmonic Percolator - this clone is the 100% vintage correct circuit, with the hard-to-find, new old-stock vintage components. It has the unpredictability of the vintage Harmonic Percolator on which it is based, with a raucous edge to the sound, and a fizzy decay note.
 
Fredric Effects Utility Perkolator - this is the result of experimenting with the Harmonic Percolator circuit for a few years. It uses lower leakage, old stock USSR germanium transistors, and incorporates a very subtle low pass filter, which takes the fizz out of the decay and makes it generally a "better behaved" Harmonic Percolator. However, it is still capable of some great, full-on fuzz sounds!

 

The Harmonic Percolator is a simple, yet fascinating circuit which readily lends itself to some tweaking. Fredric Effects already builds a faithfully vintage version of the Harmonic Percolator, however their Utility Perkolator MKII takes this circuit in another direction.

Using higher gain, lower leakage Russian Germanium transistors, and a low pass filter which only removes the high-end hisses and glitches associated with the Harmonic Percolator, the Utility Perkolator MKII has a considerably lower noise floor, and more predictable note decay. The result is a tighter and more controllable effect which is still capable of producing the classic Harmonic Percolator sound.

Reviews from our customers at Reverb:

 


CONTROLS:

Harmonics:
Controls the gain of the circuit.

Balance:
Controls the overall volume of the effect.

Si-Ge Switch:
Selects 3 diode clipping options.
Up - Silicon clipping for a smoother sound.
Down - Germanium clipping (like the original Harmonic Percolator) for a grittier sound.
Middle - No clipping, for a more open and less "fuzz" sound.
The overall volume will be higher with no signal clipping selected.

New for Version 2...
Ring Switch:

This engages a ring modulator switch, for octavey/splattery overtones. This ring circuit is closely related to the vintage Dan Armstrong Green Ringer effect.

Dip Switches on the circuit board inside the pedal:
R8 bypass, NR on - A simple, yet subtle low pass filter. By default (see photo of the inside), these switches are in the positions OFF, ON = low pass filter engaged. To disengage the filter, you can set these to ON, OFF.

 

MORE INFO:

Power Sources (each sold separately):
This effect is powered by a 9v, center-negative jack (like Boss, and most all other pedals use). Current draw is 10ma. Or it can use a standard 9v battery.

Warranty:
This product comes with the Fredric's 2-year limited warranty.

Shipping:
Ships fast! Usually same day, with Free UPS Shipping in U.S. with tracking (1 biz day processing, 1-3 business days transit time usually). 1 and 2-Day guaranteed shipping are also available.

Our added value, when purchased here at coolguitarshop.us:

  • Best total price: $199 is your absolute final/total, with Shopify Secure Checkout
  • Fast Free Shipping in U.S.
  • No Sales Taxes, Duties, or Tariffs (We pay all of these for you.)
  • No Risk: Try it on your own rig for 30 days. Don't love it? Return it for a full refund... no hassles, no costs. (We'll email you a pre-paid return label.)
  • Rock-solid customer service, 365 days a year

Enjoy the upgrades, and get into those classic sounds of Steve Albini and many others, with the Fredric Effects Utility Perkolator MKII.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 26471373417

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Keith S
Battle Creek, US
★★★★★ 5
Amazing stuff
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I’ve been using this stuff for a number of years for a number of vehicles now and it works every time. It’s especially great with those small annoying leaks where you just lose a couple pounds every few days so you have to keep adding air like once a week. It totally seals it. The bottle says to only rely on it for 300 to 500 miles and then get a proper fix. However, I have not found this to be the case. The seal holds for the rest of the life of my tire every time I’ve used it. My only complaint is that I wish it was a little cheaper, but you can seal up 2 tires (use only half the can per tire - you can probably even get away with using less). There is a garage not far from me that fixes leaking tires for $10, which is the same price as this product so not really saving any money by using it. It’s more just a matter of convenience. Just make sure you get this “thru-core” one. They have other ones as well so it can get confusing, but the one you’d want for situations like I’ve described above (small to medium leak in a typical passenger vehicle) is this “thru-core” one.
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Reviewed in the United States on March 31, 2023
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Does not compare to Miralax!
Cuba, US
★★★★★ 3
It worked
Style: 14oz
The product works.
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Reviewed in the United States on October 24, 2023
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Houston, US
★★★★★ 5
Saved the day, even at 25°
Style: 18oz
The tire tread was peeling off the tire causing a leak that could not be plugged. Completely flat. It was about 25° outside and the can only dispensed half the contents. Was able to inflate the tire and make it to the shop. So the slime saved the day.
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Reviewed in the United States on April 19, 2025
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Noba Henderson
Birmingham, US
★★★★★ 5
Flat tire… try this.
Size: 1 Gallon + Tool, Set name: Small Tire/Bicycle Formula
For husband, that’s what he puts in our tires great price and works well
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Chris
Fort Morgan, US
★★★★★ 5
Go Ridding and Go Flatless with QuickStrike tire sealent
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I’ve tried several tire sealants over the years on my ebikes and scooters, but FlatOut QuickStrike is by far the best I’ve used. From the moment I added it to my bike tires, I noticed a difference—it’s incredibly easy to install, and you don’t have to convert to tubeless to benefit from its protection. The formula is thin and spreads quickly, sealing punctures almost instantly so you don’t lose much air. What I feel that really stands out is how effective it is. I ride my ebikes through rough terrain with lots of thorns and debris, and since using FlatOut QuickStrike, I haven’t had a single flat ( unlike before ). Even when I’ve picked up multiple punctures, the sealant has handled them all without a problem. I feel that the peace of mind it gives me is priceless, especially on long rides or commutes where a flat could ruin your day ( and It has in the past ). Another big plus is that it’s a one-time application—it won’t dry out or turn into a mess inside your tire ( like that Green Stuff ). It’s also safe for both tubes and tubeless setups, and works well in my 20 inch and 14 inch tires. I’ve used it on my ebikes and scooters and the results have been consistently impressive. Make me feel confident of the durability of my tires on my ride. I bought the gallon bottle because I have a few ebikes and scooters. this stuff works great! If you want to spend less time fixing flats and more time enjoying your ride, this is the sealant to get. Highly recommend!
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Reviewed in the United States on June 14, 2025

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