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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
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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
4.5 ★★★★★
Based on 135 reviews
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Product Reviews
★★★★★ 5
Wonderful!
Size: Standard/Queen (Pack of 1), Style: High Loft (6"-7")
I ordered the loftier version of the pillow and I love it! I'm a side sleeper and I've been having pillow issues over the last few years where I swear every pillow is either too tall, too thin, too soft to provide support, to firm and hurts my ears, or the stuffing is too slick or something and migrates away from wherever I put my head. It's been... A time.
But this pillow has been wonderful! I've been using it for a couple weeks now and it's the perfect height for me! The latex inner chamber provides some much needed support, but the softer outer chamber gives me enough cushion to keep my ears from aching.
I will say that, while this is the perfect height for me, personally, I think that if you're someone who prefers a pretty lofty pillow, that this might not be tall enough for you. I ordered the taller version, and it feels right for me, but I've noticed in my pillow buying extravaganza that even pillows that everyone else loves that are designed for side sleepers are usually just too tall for me. So if this pillow is right for me, and you prefer a pretty lofty pillow, I really bet that this won't be tall enough in that case. It's definitely more of a medium loft, rather than a very high loft
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Reviewed in the United States on June 20, 2024
★★★★★ 5
Read this review. This pillow saved me.
Size: Standard/Queen (Pack of 1), Style: High Loft (6"-7")
I have to testify about this pillow, my brothers and sisters. Ever since I hit my 30s, my body has gone down. Aches and pains. Pops. Crackles. Snaps. It’s ridiculous. Over the last 2 years, I have managed to injure a muscle in my shoulder and the pain is unbearable when it is inflamed. I finally narrowed it down to the pillow I was sleeping on. I have an attachment to a pillow I’ve owned for over 20 years - that’s another story. I could fold it 3 times and it was finally thick enough to support my head. My shoulder got so tore up recently that I had to go through 2 rounds of steroids plus round the clock ibuprofen. Waking up in the night, the whole ordeal. I ordered this pillow after much research all over the internet. I was appalled by the $165 price ticket. But when you’re in that level of pain, you’re just about willing to do whatever it takes. The first night I immediately noticed I got more consecutive hours of sleep than I had in weeks. A week later and my shoulder is pain free. I could’ve cried. The height of this pillow stabilizes my neck and shoulders perfectly. It is firm, but gives and contours to your neck and head. It’s a heavy pillow but I don’t even care. Truly I don’t think I’ll ever go back. This pillow has saved my shoulder and I’ll never stop thanking God for it. If you’re experiencing back, shoulder, or neck pain and are considering this pillow, just order it. Please. Just do it. I’m forever changed. But I’m still keeping 20 year old pillow… just for sentimental purposes. 😂
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Reviewed in the United States on September 3, 2025
★★★★★ 5
Really good pillows
Number of Items: 1, Number of Items: 1
I’ve been using this pillow for a while now and it’s honestly one of the most comfortable pillows I’ve tried. It has a soft, cloud-like feel but still gives enough support for my neck and shoulders. I’m a side sleeper and it keeps its shape well through the night. The material feels high quality, and it doesn’t go flat like cheaper pillows. Definitely improved my sleep quality and worth the purchase.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Soft AND supportive
Number of Items: 1
I knew I needed a very soft pillow - all the foam pillows I had bought recently to try to upgrade our home pilllow selection seemed ok to the touch but were still too firm once I tried them out, but recently I also had some neck pain that needed some gentle support and the old old foam pillow I had that was so very soft was losing its supportive qualities and the pain wasn’t getting better. This one seemed by description to fit the bill- very soft by the company’s own definition but also with support. I’m happy to report this is exactly as advertised- the softest foam pillow I’ve tried out of the box but also good support. Pain has improved since I started using this pillow. I would buy more if we need more pillows, it’s perfect for me and I think would be comfortable for most people. I think you just need to figure out how firm you need your pillow and also height preference . I’m an all over sleeper -back, side, even belly sometimes, so it’s fine for me, but it is a little taller compared to other pillows I’ve bought recently. I didn’t compare/try other prominent pillow brands, mostly my experience is Ikea (my daughter uses a very flat and nice foam pillow from them that is even a little pricier than this one and it works well for her), and whatever brands happen to be available at target and Costco. This price point for a name brand is reasonable, I think; I was looking at other brands way over $100, and I was willing to spend that much for something that would work long term, so this one working was great. Also, this definitely does not have any cooling effect technology, which is fine by me, but something to consider if you do like cool pillows. (Although, PSA: I recently had to throw away older foam pillows that had those cooling gel panels because the gel panels started disintegrating into sticky ooze; gross and had to throw away whole pillow because couldn’t dissociate from rest of the pillow. Sad cuz the foam part of those pillows were fine.) Anyway, if you like softer pillows but want good support, this one works well and is worth trying!!
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Reviewed in the United States on May 30, 2025
★★★★★ 4
Flatter than a regular pillow but nice and soft
Number of Items: 1
Is it softer than a typical memory foam pillow? Yes. But it’s also a lot flatter. I don’t find this pillow rebounds very well. It’s good for stomach sleepers but not so much for side sleepers. I’m a 2/3 of the night side sleeper so it’s unfortunately not my magic pillow.
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Reviewed in the United States on February 11, 2026