PRS HDRX 20-Watt Tube Electric Guitar Amp Head - Black Paisley | No Limit Guitar Co, Idaho Falls
*Pictures in this listing are authentic and were taken at our music store.
The PRS HDRX 20 is the kind of amp that only happens when genuine historical access meets world-class engineering — and it shows in every detail. When Paul Reed Smith and PRS amp designer Doug Sewell got their hands on Jimi Hendrix's actual Woodstock-era amplifier in 2018, they didn't just admire it — they mapped every circuit, studied every component, and rebuilt the concept from the ground up. The result is an all-tube, British-voiced 20-watt head with the dynamic expressiveness and tonal authority of a true vintage amp, dressed here in a striking Black Paisley finish that's every bit as bold as the tone it produces. For players who want the real thing at a real-world volume, the HDRX 20 is it.
Product Overview
Twenty watts of all-tube power sits at the heart of the HDRX 20, driven by a pair of 5881 power tubes that are known for their natural compression, harmonic richness, and smooth breakup characteristics at lower output levels. Three 12AX7 preamp tubes handle gain staging upstream, delivering the touch-sensitive, dynamically expressive response that separates a great tube amp from everything else on the market. The Black Paisley finish is a head-turning aesthetic choice that nods to the psychedelic era that inspired the amp's design lineage — equal parts stage statement and conversation starter.
One of the most player-friendly aspects of the HDRX 20 is how it handles its two channels. Rather than requiring external jumper cables to blend voices the way classic British heads demand, the HDRX 20's channels are bridged internally from the factory. Dedicated per-channel volume controls let you set the balance between the two voices precisely and repeat it night after night. Add the all-new master volume control — a feature making its debut on the HDRX series with this model — and you have a head that can produce fully saturated, harmonically complex tones at volumes that won't clear a rehearsal room or upset the neighbors.
Tonal control is both broad and intuitive. The familiar 3-band EQ gives you foundational shaping across bass, midrange, and treble, while the presence control handles upper harmonic content and the overall sense of air and openness in the sound. A 2-way bright switch and High Mid Gain switch extend the palette further, offering additional voicing options without cluttering the front panel. Three sets of speaker outputs cover 16 ohm, 8/16 ohm, and 4/8 ohm configurations, making the HDRX 20 a flexible match for nearly any cabinet pairing. Adjustable fixed bias keeps the power tubes performing at their best over the long haul.
Ideal For
- Rock, blues, and classic rock players who want Hendrix-era British tube tone in a stage-ready, lower-wattage format
- Guitarists at No Limit Guitar Co in Idaho Falls seeking a boutique-caliber all-tube amp head with genuine vintage inspiration
- Players who need saturated tube tones at controlled volumes without relying on external attenuators or power soaks
- Performers who want a visually distinctive amp head that commands attention on stage as much as the tone does
- Tone-obsessed players looking for the best 20-watt British-style tube amp head with flexible impedance and dual-channel blending
Key Features
Rooted in Hendrix's Actual Woodstock Amp This isn't a "inspired by" marketing claim — Paul Reed Smith and Doug Sewell had direct access to the late-'60s British amplifier Jimi Hendrix played at Woodstock. Their meticulous analysis of its original circuitry informed every design decision in the HDRX series, and the HDRX 20 carries that lineage faithfully into a modern, giggable format.
5881 Power Tubes for Natural Breakup The 5881 power tube configuration gives the HDRX 20 a thick, articulate voice that compresses naturally and breaks up in a musically satisfying way as the amp is pushed. The 20-watt output means those power tube characteristics become accessible at volumes where players can actually hear and feel the difference — without needing to stand behind a blast shield.
Master Volume — New to the HDRX Series The addition of a master volume control is a genuine game-changer for the HDRX platform. Players can now push the preamp hard for rich, saturated tones and then bring the overall output down to a practical level — opening up the amp's best sounds in studios, smaller venues, and home practice environments alike.
Internally Bridged Dual Channels Blending two channels on a vintage British head traditionally means running a jumper cable between inputs — a workaround the HDRX 20 makes unnecessary. The internal bridging is handled inside the amp, and per-channel volume controls give you clean, repeatable control over the blend without any external fuss.
Comprehensive Tone Shaping Between the 3-band EQ, presence control, 2-way bright switch, and High Mid Gain switch, the HDRX 20 offers a thorough and versatile set of tonal tools housed in a clean, uncluttered front panel. From glassy clean tones to thick, saturated crunch, the control set handles the full range of what a British-voiced tube head should be capable of.
What's Included
- PRS HDRX 20-Watt Tube Amp Head (Black Paisley)
- Standard IEC AC Power Cable
- Manufacturer's Warranty
Technical Specifications
| Specification | Details |
|---|---|
| Type | All-Tube Guitar Amplifier Head |
| Output Power | 20 Watts |
| Channels | 2 (internally bridged) |
| Preamp Tubes | 3 x 12AX7 |
| Power Tubes | 2 x 5881 |
| EQ | 3-Band EQ, Presence Control |
| Additional Controls | 2-Way Bright Switch, High Mid Gain Switch, Master Volume, Per-Channel Volume |
| Inputs | 1 x 1/4" |
| Speaker Outputs | 1 x 1/4" (16 ohm), 2 x 1/4" (8/16 ohm), 2 x 1/4" (4/8 ohm) |
| Bias Type | Adjustable Fixed |
| Power Source | Standard IEC AC Cable |
| Height | 9" |
| Width | 17.25" |
| Depth | 9" |
| Color | Black Paisley |
| Manufacturer Part Number | 108456::BP |
| Weight (weighed on our music store scale) | 20.2 lbs. |
Experience the PRS HDRX 20 Today
Few amp heads at any price point can claim the historical pedigree and tonal authenticity of the PRS HDRX 20 — and we have the Black Paisley edition ready and waiting at No Limit Guitar Co in Idaho Falls. Stop in and plug into it, or reach out to our team today to check availability. Some tones have to be heard to be believed, and this is one of them.