SKU: 41403623751
jfet boost pedal

jfet boost pedal 29 Pedals JFET Boost Pedal

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Description

jfet boost pedal 29 Pedals JFET Boost PedalJFET (jay fet) is a boost pedal rooted in my love of the JFET transistor, long loved in the world of audio for its similarities to vacuum tubes. As always for 29 Pedals its a ground up design, from a blank sheet of paper, an effort to elevate the humble boost circuit to something refined and tonally enhanced. The JFET circuit has three modes, N for normal, where a typical boost might sit in terms of frequency response, almost a treble boost but not

JFET (jay-fet) is a boost pedal rooted in my love of the JFET transistor, long-loved in the world of audio for its similarities to vacuum tubes. As always for 29 Pedals it’s a ground-up design, from a blank sheet of paper, an effort to elevate the humble boost circuit to something refined and tonally enhanced.

The JFET circuit has three modes, N for “normal,” where a typical boost might sit in terms of frequency response, almost a treble boost but not quite. “F” adds a little more weight, and “X”, my preferred mode. “X” mode flattens the circuit all the way down to below 10Hz, giving you an incredible feeling of weight without sounding like additive EQ. The extension in the frequency response also tightens the phase and gives you an incredible, solid feel. The L control sets the level, it’s a fader after the boost circuit and before the output driver. This means the gain of the first stage is set, and you can use the fader to set the level into the output stage, so THD, hair, and tone remain the same throughout the travel. The output driver after the fader ensures that the output impedance remains consistent. JFET makes about 19dB of gain.

JFET can be used after a buffer or input driver (like EUNA), and also can function as an always-on input driver at the beginning of the board. It sounds great following EUNA and also stacked with FLWR and OAMP. It will drive heavy loads and has high-headroom, making it equally happy at the end of your board. The same WHATEVER power input and relay-based switching as our other pedals, and instant-bypass whenever power is removed.

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SKU: 41403623751

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4.6 ★★★★★
Based on 12 reviews
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B
Verified Purchase
BBarry
Belleville, US
★★★★★ 3
Cute, but not Maligator-proof!
Color: Small - Towering Timmy Monster, Color: Small - Towering Timmy Monster
Fun toy while it lasts. My Belgian Malinois made quick work of this little guy but still enjoys playing with its carcass. Bite Force* but not taking into account the bite force of a Mali-gator!
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Reviewed in the United States on May 7, 2026
S
Verified Purchase
Steffyt
Belleville, US
★★★★★ 5
Puppy Love
Color: Small - the Goofy Monster, Color: Small - the Goofy Monster
Short backstory.... My daughter moved in with her 3 dogs recently and brought her dogs toys. Over the course of the last 3 months, my dogs have managed to steal every last toy they could find. fast forward to purchasing this Blue Monster. It came today and was immediately grabbed by one of my dogs. She refused to give it up even for her favorite ball. Ten minutes later another dog had the baby monster and was not giving it up!!!! (think growling) I thought that I would put the monster up for the night to allow for some sleep but it felt like it had been soaked in slobber ( I am sure I saw it drip ;) ). My dogs seems to think this little blue monster is their one true love. Now for some facts. 1. Baby monster is quite small in comparison to my other Bite Force dog toys. It is not too small for my dogs but it is definitely not a size I would give to my daughters Pit that thinks she is a vacuum. 2. Squeaker lasted about 2 minutes before my dog drool invaded it. Currently no squeaky sounds can be heard...just slightly squishy sounds 3. No holes despite my dogs trying. There has been constant chewing (by Standard Poodles) on this little guy for the last 5 hours and not one little open area. Trust me this is a huge accomplishment. Stuffies last 10 seconds in this house. If you need a toy that will last longer than most I highly recommend Bite Force. The are designed for tough chewers and take a beating
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Reviewed in the United States on November 11, 2025
B
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B shops here too much
West Palm Beach, US
★★★★★ 2
My raptor GSP destroyed this dino toy
Color: Medium - Dilophosaurus, Color: Medium - Dilophosaurus
My dog ripped this toy apart faster than the trex did the lawyer in Jurassic Park. 2 hours! Arm was ripped off, stuffing pulled out methodically over the next to days. Now it is a gutless husk. The metor was kinder to the og dinos than my gsp was to this. Sorry Bite Force. Open to product sampling tho!
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Reviewed in the United States on May 19, 2026
E
Verified Purchase
Edward Williams
New York, US
★★★★★ 4
My Hero pup is super happy with it
Color: Large - Billy the Beast Monster
I was super excited to order this and had waited some time to do so. I wanted Big Billy The Beast Monster in large Green, he’s an awesome looking guy. My Golden Retriever was all over me while I was up packaging Him and his tail was in helicopter mode. He was so excited to have it and carried it around the house everywhere we went, he’s laying on me with his head in my lap and Billy’s right next to him. Reason for buying it? Well he loves plushies but there are not many available out there that can stand up to this 80 pound chew monster so I have to keep him on harder stuff, 2 of which are the cheapest toy skull and crosses in orange and blue from a cheap outlet site but he loves them. Orange was first then when we pulled out the blue one he had a aha moment. Now with Billy he was on a whole new level of excitement, I’ve never seen him this excited over a toy, he can’t stop carrying it with him everywhere and showing it off to the other pups I have, there’s no growling or resource guarding but he definitely won’t want to share and that’s of because I always take away any plushies that he gets to because he is serious about chewing. This being made with Kevlar gave me hopes of longevity but he had the ears and the end of 1 hand chewed off in under 2 hours, am I disappointed…yea a little but he has gotten so much joy out of it that it’s made me really happy to have bought it anyway, see he’s my Service Dog so he spends a lot of time being so serious and working that he needs any outlet for spending energy possible and he’s so happy with it that it makes me happy. As I’m writing this he’s asleep with his head in my lap and Billy right next to him looking very tired and happy and that my friends is worth all the beans in the world.
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Reviewed in the United States on May 4, 2026
A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Durable, easy to throw, easy to clean.
My lab loves it! Durable, easy to clean when it gets muddy, and easy to throw.
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Reviewed in the United States on May 21, 2025

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