percolator pedal Fredric Effects Utility Perkolator MKII
SKU: 67194460605
percolator pedal

percolator pedal Fredric Effects Utility Perkolator MKII

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Description

percolator pedal 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:
  1. Standard Shipping : 3-10 business days
  • 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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67194460605

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Joseph Onkst
Los Angeles, US
★★★★★ 5
Cool toy. Fun for all
Color: Blue
A cool toy. entertainment for the dogs but more so for the dog parents to watch the dogs reaction. Comes with an additional rope just in case, which I loved. Only side note I would say is that the fast mood could be a little faster. My Golden retriever figured out the speed in less than 24 hours and now picks up the toy to try to chew it up, instead of chasing. With him attempting to chew on the toy in the small time I give him, there are no teeth marks yet…this toy appears to be durable. We play in short increments but enjoy the toy.
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Reviewed in the United States on May 29, 2026
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Tracey SeekMorrison
Belleville, US
★★★★★ 3
Fun toy, but not durable for large heavy chewers
Color: Orange, Color: Orange
I bought this for my 80+ pound Goldendoodle, and he absolutely loved it at first. He barked at it, chased it, and it gave him some great exercise and stimulation. It definitely kept his attention and was fun to watch him play with it. Unfortunately, once he was able to get it in his mouth, he chewed the orange end off fairly quickly. The company does include an extra replacement piece, which is actually a great idea and appreciated. However, he ended up chewing that one up too after a few more play sessions. This toy worked well for short-term play and entertainment, but it’s not durable enough for large dogs with strong chewing habits. I think this would be much better suited for small to medium dogs. Great concept, but I would not repurchase for a heavy chewer. Picture of my dog for size reference!! 🫶🐶
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Reviewed in the United States on February 17, 2026
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YMYZ
Lake Worth, US
★★★★★ 5
My Dog Loves It!
Color: Orange
Great interactive toy for my dog! The quality is nice, no weird smell, and it keeps my dog entertained and active for a long time. Worth the price!
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Reviewed in the United States on May 21, 2026
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Elizabeth
Phoenix, US
★★★★★ 5
Good quality and definitely worth it for energetic dogs.
Color: Orange
The automatic moving and rolling action really grabs my dog’s attention, and the rope adds extra fun for chasing and playing. It helps reduce boredom and keeps my dog mentally stimulated, especially when indoors. The motion activation works well, and it’s a fun and engaging toy overall.
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Reviewed in the United States on May 3, 2026
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pgm
Fort Morgan, US
★★★★★ 5
Best Dog (Puppy) Toy I've Found
Color: Orange
This is a fun toy for me as well as my puppies! When it arrived I opened it right away. I was anxious to get my Pup's playing with something that wouldn't require me to play with them. I put it down and it was charged and ready to go. I had no idea what to expect. All three of my Pups were interested in it. (Which is unusual because two of them are Shih Tzu's and don't pay a lot of attention to most toys.) It's safe and really cute to watch. My youngest pup had been playing all day and was tired when I finally took a photo. I can't tell if the video uploaded correctly but if it did you can see how much fun it was. It is very durable and can actually turn itself over and go across the floor. It charges fast and will last a day and a half or two depending how much it's been used. It does go to sleep if no one is playing with it. They furnish you with an extra top and a fresh "rope." I really appreciate how much customer service is done with this item. I will watch for more of their items to purchase.
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Reviewed in the United States on January 27, 2026

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