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Description
parametric equalizer pedal PettyJohn Filter Deluxe Semi Parametric Equalizer Guitar Effect Pedal — Truetone MusicFilter Deluxe Features: Dual 990 style discrete opamp Studio Grade Three Band, semi parametric EQ based on classic analog recording console topology Low Band with 12 dB boost or cut. Bell at 150 Hz or Low Shelf at 100 Hz. Mid Band with 12 dB Boost or cut. Inductor driven bell filter with three frequencies: 460Hz, 780Hz, 1. 8 kHz High Band 12 dB Boost or Cut. Bell at 6kHz or 4 kHz Low noise, low distortion premium electronics with full range frequency
Filter Deluxe Features:
- Dual 990 style discrete opamp
- Studio-Grade Three Band, semi-parametric EQ based on classic analog recording console topology
- Low Band with 12 dB boost or cut. Bell at 150 Hz or Low Shelf at 100 Hz.
- Mid Band with 12 dB Boost or cut. Inductor driven bell filter with three frequencies: 460Hz, 780Hz, 1.8 kHz
- High Band 12 dB Boost or Cut. Bell at 6kHz or 4 kHz
- Low noise, low distortion premium electronics with full range frequency response 20Hz-22kHz.
- High Performance Power:
Dual-rail power section with 9V to 18V operation range, providing 18V-36V of voltage swing for huge internal headroom while drawing under 100mA and whisper quiet - Audiophile, Studio-Grade Performance in a Pedal:
USA designed and manufactured Discrete Opamp
Audiophile grade, through-hole 1% Metal Film resistors
Top shelf WIMA and Silver Mica caps used in tone sensitive operations
Shortest purest signal path possible
Lead-Free PCB constructed with Audiophile Lead-free Silver Solder
Extremely Low Noise - True Hardwire Bypass Switching
- Pedal board friendly footprint and rear-mounted jacks
Box and Circuit Handmade in the beautiful Pacific Northwest, USA
- Dimensions: 2.75”W x 4.75”L x 2.5” H
- Weight: 2.5 lbs
The FILTER is a simple but powerful semi-parametric guitar equalizer featuring three individual bands to cover the range of a guitar effectively. The circuit has been carefully designed with high headroom for low noise, low distortion performance, while offering up to 12dB of boost OR cut with the ultra transparency and musicality of an analog recording console EQ. The Low band is switchable between a bell filter at 150 Hz or a Low shelf at 100 Hz and has been voiced to provide very powerful low-end without feeling muddy, even at high boost levels. The High band is a carefully voiced bell filter with a center point at 6 kHz or 4 kHz. The High band filter is highly useful for dialing in the perfect amount of sweet articulation or smoothing harsh overtones with a touch of analog magic that console EQ is known for. The MID band is a tip of the hat to some of the most beloved console EQs ever made and features a premium inductor driven bell filter with three selectable frequencies at 460 Hz, 780 Hz and 1.8KHz. These frequencies are key musical points in the guitar’s range that can be very useful to control with a dedicated EQ. Beyond utility value, the use of a real inductor results in a rich, dimensional sound that makes the “mids” come alive with extra harmonics, especially when pushed hard. Vocal, wah type tones are even available when the mid bell is pushed to the extreme and can be perfect for getting a solo track to cut through the mix. With plenty of gain on tap, use the LEVEL control to achieve unity gain or boosting with any EQ curve.
The FILTER is a culmination of our obsession with studio grade electronics and we are proud to offer what we feel is the most musical EQ ever put into a pedal format.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.4 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
This is a great ball for high energy dogs.
Color: Blue
I have a Belgian Malinois, so you can imagine the Maligator jaws. Just opened this today and let her play with it indoors. She LOVES IT. It wore her out and it’s a toy she can really stay focused on without needing me to throw or roll for her. It moves on its own! I supervised her play. I was hoping it was too big to get under the couch, but no. It goes right under it. I had to block off the gap so I didn’t have to keep getting it out from under for her. The outter “shell” is very durable! When she had resting moments, she chewed it pretty good - I could hear the material squeaking against her teeth. I was worried she was tearing it up, but nope! Not a mark on it. It’s easy to set up and operate. It needed charging before play. After hours of play, she was able to somehow unscrew the outter shell. This concerned me bc the smaller, inner ball mechanism came out but I saw it right away and was able to put it back together. So, make sure it’s screwed together tightly (which I thought I had done without breaking it) and check it from time to time to make sure it hasn’t loosened. This is a great ball for her incredible high energy drive. It gives her the work and fun play she needs to get tired, which I love. This toy is on the expensive end, but so far it’s worth it. Now we’ll see how long it lasts!
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Reviewed in the United States on October 7, 2025
★★★★★ 5
Love love it
Color: Blue
Best dog toy ever. I have a 1 year old boxer who is full of energy (understatement). This ball has provided more entertainment for us both than any dog toy I’ve ever purchased. Charge holds well and has a very resilient shell. I love it. Worth the price.
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Reviewed in the United States on May 23, 2026
★★★★★ 4
Great ball for limited entertainment. Replaceable outer shell is an amazing option!
Color: Blue, Color: Blue
Bought this for our 45lb, ball-obsessed Dutch shepherd/pit bull dog mix. I had one of these years ago with the hard shell and couldn’t be happier with the new foam shell.
The new foam shell is much quieter and while our dog might put holes in it with his teeth, he doesn’t seem to ever pull pieces off.
For engagement level, he found it VERY interesting at first and was scared to grab it, but once he got over that he started holding it in his mouth even when it shakes and just tries to keep it.
Isn’t the best for fetch or anything as he has trouble letting it go when it is actively moving, but it makes him happy while he has it. We just make sure to monitor him while it is out.
The ability to change the outer shell and just buy a replacement for the shell instead of a whole new toy is a lovely feature that makes me very happy to continue buying from this company.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Great Interactive Option
Color: Blue
To start, I have been very happy with this purchase. A couple of key points for me are durability and being able to keep my dog's attention. I have had it for almost a year, just a month shy, and she hasn't managed to get through the foam outer shell even though she tries real hard to do so. Let's just say, she's hard to find toys for because of her habit of finding the point of failure where she can pick and gnaw at until the toy is no longer safe for her to have. With this toy, she not only found her match, but it also has her watching, waiting, and even stalking. Only one small issue has recently occurred: the motor has started having an issue where the charge doesn't hold, and it doesn't remain on afterwards. I have reached out to Cheerble directly to see about replacing it since I am still within their 12-month timeframe, and they responded right away.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Quality product for the right dog...
Color: Orange
Honestly it's a really cool product well constructed and moves around on its own with several different modes. The design id brilliant with a tough rubber ball that unscrew to expose the element that makes it move in the middle. The dog won't be able to unscrew it but you can if you ever need to replace the ball for any reason but it would take some work for a dog to destroy the outer ball. Almost like "Kong" type material. The ball is about the size of a softball and the element inside is about the size of a golf ball. I thought my dog would love this but she was afraid of it, which is strange because she's afraid of nothing. Anyways I gave it to my neighbor upstairs and she has a yorkshire terrier who plays with it all the time so it all worked out great. Quality product . Good job!
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Reviewed in the United States on March 17, 2026