JOYO Dual-Channel Overdrive Guitar Pedal, Pure Analog Circuit with Independent Clipping (Hard/Soft) per Channel, Stackable A to B, True Bypass (King of Kings R-20)
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*Price sourced from Amazon.com. Last updated 2026-08-27. Price and availability subject to change.
Bottom line: The JOYO Dual-Channel Overdrive Guitar Pedal, Pure Analog Circuit with Independent Clipping (Hard/Soft) per Channel, Stackable A to B, True Bypass (King of Kings R-20) is a niche pick — read recent reviews before buying in the retro graphics cards category, priced around $62.99. Compare close alternatives before committing.
SpecPicks Verdict
SpecPicks scored JOYO Dual-Channel Overdrive Guitar Pedal, Pure Analog Circuit with… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the retro graphics cards category. JOYO's retro graphics cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.
Common buyer scenarios for retro graphics cards 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
- DUAL-CHANNEL OVERDRIVE — 2 INDEPENDENT CHANNELS, STACKABLE A→B: The King of Kings delivers two completely independent overdrive channels in one pedal—each with its own Volume, Gain, and Tone controls. Use Channel A for a warm, low-gain rhythm tone and Channel B as a clean boost for solos, or stack them in series (A→B) for cascading, singing lead saturation. Players describe it as delivering beautiful, crystal clear low to mid gain tones suitable for everything from blues to classic rock.
- INDEPENDENT CLIPPING PER CHANNEL — 4 DISTINCT VOICINGS: Each channel features its own pair of clipping diode switches—giving you four distinct voicing combinations per channel. Hard Clip delivers tight, modern crunch with percussive attack. Soft Clip provides smooth, compressed overdrive with tube-like warmth. Both switches off yields a transparent, open-sounding clean boost ideal for pushing your amp's front end. Both switches on combines both clipping styles for maximum saturation. Pro tip: the clipping effect is most noticeable at higher Gain settings; at lower gain, the differences become more subtle.
- PURE ANALOG CIRCUIT — 3-KNOB CONTROL PER CHANNEL: The all-analog signal path delivers organic, touch-sensitive response that reacts naturally to your picking dynamics and guitar volume knob adjustments. Each channel features dedicated Volume, Gain, and Tone controls—simple, intuitive, and instantly familiar. Dial in everything from edge-of-breakup warmth to rich, harmonically saturated crunch without digital artifacts or menu diving.
- TRUE BYPASS & ROAD-READY R SERIES DESIGN: True bypass switching preserves your guitar's natural tone when the pedal is disengaged. Encased in a rugged aluminum alloy, the King of Kings features the iconic R Series ambient LED lighting with 3 modes (Sync, Always On, or Off) via a recessed switch on the underside. The sturdy metal footswitches and smooth, responsive knobs are built to withstand heavy stomping night after night.
- JOYO QUALITY & AFTER-SALES CONFIDENCE: Backed by JOYO's decade-plus reputation for crafting innovative, budget-friendly gear. Important: Powered by 9V DC adapter only (center negative, not included). Rated current: 20mA. No battery compartment. For the cleanest sound and to minimize any audible switch pop, use a regulated, isolated 9V power supply and ensure your amp's input level is set appropriately. Should any issues arise, please contact us through your Amazon order page.
Full Specifications
| Brand | JOYO |
|---|---|
| Color | Gold |
| Style | Overdrive,Crunch,Analog |
| Voltage | 9 volts_of_direct_current |
| Amperage | 20 microamps |
| Model Name | JOYO King of Kings |
| Model Number | Manufacturer-JOYO-R20-0010 |
| Power Source | Corded Electric |
| Compatibility | Switch |
| Controls Type | Knob |
| Signal Format | Analog |
| Connector Type | 1/4-Inch Straight |
| Item Type Name | Electric Guitar Electronics |
| Item Dimensions | 5.12 x 5.12 x 1.97 inches |
| Number of Items | 1 |
| Number of Packs | 1 |
| Hardware Interface | 1/4-inch Audio |
| Included Components | Effect Pedal, User Manual |
| Audio Output Effects | Overdrive,Multi-Effect |
| Manufacturer Part Number | 031-00R20-0010 |
Ready to buy?
JOYO Dual-Channel Overdrive Guitar Pedal, Pure Analog Circuit with Independent Clipping (Hard/Soft) per Channel, Stackable A to B, True Bypass (King of Kings R-20) is sold on the used and vintage market, where eBay carries the live inventory — Amazon does not stock this part. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-08-27. Price and availability subject to change.
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