The HDRX 20 Amp Head captures the Hendrix-inspired tube head magic of PRS’ HDRX line in a lower-wattage head that’s ready for action! Back in 2018, Paul Reed Smith and PRS Amp Designer Doug Sewell got their hands on Jimi Hendrix's Woodstock-era amplifier — a late-'60s British model. After meticulously studying the original amp's circuitry, PRS retooled and refined it, giving rise to the HDRX series. This amplifier head features 5881 power tubes that break up well at lower volumes, three 12AX7 preamp tubes, and an all-new master volume knob that makes nailing saturated tones a breeze, even at low volumes. You'll appreciate the HDRX 20’s streamlined control layout, versatile channel blending, and powerful EQ features like 3-band EQ, presence, and gain controls. If you’re chasing an authentic British-style amp with a dash of American ingenuity, the PRS HDRX 20 was tailor-made for you!

- 20W tube guitar amplifier head gives the HDRX series a smaller lower-wattage overhaul
- Heavily inspired by Jimi Hendrix's Woodstock-era amp
- 2 x 5881 power tubes for thick but articulate tone that drives and breaks up beautifully at lower wattages
- 3 x 12AX7 pre-amp tubes
- Master volume knob (new to the HDRX series) — saturated low-volume tones are now easy to achieve without external attenuators
- Incredible dynamic range — achieve everything from clean chime to crunchy grime by altering picking pressure
- Familiar 3-band equalizer gives you ample tone shaping
- 2-way bright switch and High Mid Gain switch offer further sonic customization
- Presence control for dialing in your upper harmonics
- Internally bridged channels eliminates the need for external jumping
- Per-channel Volume controls for easy blending of channels

Every instrument and piece of tech we sell has been professionally checked over and setup by our in-house technician to ensure optimal playability. We pack each order with care and ship promptly.
Mill River Music is a full-service shop in Western Massachusetts, proudly offering new, used, and vintage gear, plus repairs, and friendly advice. Reach out at (413) 505-0129 or with any questions!
International buyers are welcome — please message us for an accurate shipping quote before purchase.