JOYO
Analog Distortion Guitar Pedal, FAT/MOSFET Toggle with DISTORTION/FILTER/VOLUME Control, True Bypass (SPLINTER JF-21)
*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.
Bottom line: The Analog Distortion Guitar Pedal, FAT/MOSFET Toggle with DISTORTION/FILTER/VOLUME Control, True Bypass (SPLINTER JF-21) is a niche pick — read recent reviews before buying in the flight sim gear category, priced around $39.99. Read recent reviews carefully before committing.
SpecPicks Verdict
SpecPicks classifies JOYO Analog Distortion Guitar Pedal, FAT/MOSFET Toggle with… as a niche pick — read recent reviews before buying in the flight sim gear category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. JOYO's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for flight sim gear of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Backed by JOYO's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- CLASSIC ANALOG DISTORTION — FUZZ & DISTORTION HYBRID TONE: The SPLINTER delivers a thick, saturated distortion tone through an all-analog design, blending elements of fuzz and distortion for a uniquely aggressive voice. From tight, articulate crunch to raw, roaring fuzz, the pedal covers the full spectrum of gritty, grungy tones with a touch-sensitive dynamic response that reacts naturally to picking attack and guitar volume adjustments. Players describe the sound as having "a great edge of breakup sound" and appreciate its versatility across a wide range of playing styles.
- FAT & MOSFET TOGGLE SWITCHES — TWO UNIQUE VOICINGS: Two independent toggle switches provide additional tonal flexibility. The FAT switch adds thick, powerful low frequencies, suitable for heavy riffs and filling out single-note solos with a fuller presence. The MOSFET switch engages germanium diode clipping for a softer, more vintage feel with smoother compression, ideal for classic rock, blues, and dynamic lead playing. When MOSFET is off, the pedal uses silicon diode clipping for a brighter, more aggressive modern edge. Note: the difference between MOSFET and Stock clipping is most noticeable at higher DISTORTION settings; at lower gain, the differences become more subtle.
- 3-KNOB CONTROL — DISTORTION, FILTER & VOLUME: Sculpt your signature distortion tone with three intuitive controls. DISTORTION sweeps from subtle, edge-of-breakup grit to full-on, saturated fuzz. Start around 9 o'clock for tight crunch, push past noon for aggressive metal, or max it out for raw, roaring fuzz. The FILTER knob is a powerful tone-shaping tool—turn it clockwise to roll off high frequencies for a darker, smoother voice, or counter-clockwise for a brighter, more cutting presence. VOLUME adjusts overall output from unity gain to a boost that can push your amp into natural overdrive.
- SOCKETED OP-AMP CHIP FOR CUSTOMIZATION: Unlike most distortion pedals that lock into a fixed sound, the SPLINTER features a socketed OP07DP op-amp chip that can be easily swapped for other popular chips to fine-tune tone. Different op-amps produce slightly different gain structures, compression characteristics, and harmonic content. Players confirm the JOYO version is "more responsive to the OpAmp changes in a way that you can actually hear." Note: opening the pedal to swap chips will void the warranty. Please ensure you are satisfied with the stock sound before attempting any modifications.
- JOYO QUALITY & AFTER-SALES CONFIDENCE: Backed by JOYO's decade-plus reputation for crafting innovative, budget-friendly gear that punches far above its weight. Encased in a rugged aluminum alloy. Dual power options: use a standard 9V 6F22 battery (not included) for grab-and-go portability, or a 9V DC adapter (center negative, not included) for consistent power. Rated current: just 20mA—exceptionally power-efficient for extended battery life. For the quietest performance—especially with high-gain analog distortion circuits—use a regulated, isolated 9V power supply and avoid daisy-chaining with other pedals. Should any issues arise, please contact us through your Amazon order page.
Full Specifications
| Brand | JOYO |
|---|---|
| Color | Cyan |
| Style | Filter,Distortion |
| Voltage | 9 Volts (DC) |
| Amperage | 20 Microamps |
| Set Name | Filter,Distortion - Cyan |
| Model Name | JOYO Splinter |
| Model Number | Manufacturer-JOYO-JF21-0010US |
| Power Source | Corded Electric,Battery Powered |
| Compatibility | Switch |
| Controls Type | Knob |
| Signal Format | Analog |
| Connector Type | 1/4-Inch Straight |
| Item Type Name | Electric Guitar Electronics |
Ready to buy?
JOYO Analog Distortion Guitar Pedal, FAT/MOSFET Toggle with DISTORTION/FILTER/VOLUME Control, True Bypass (SPLINTER JF-21) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.
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