PRS HDRX 100 Amplifier Head (100 Watt)

The PRS HDRX 100 brings the legendary tones of late 60s British amplification into the modern era, built around an “Authentic Hendrix” Touring Circuit that was meticulously studied from one of Hendrix’s personal amplifiers, reportedly used at Woodstock. This circuit design pushes the high-end frequencies for exceptional clarity without harshness, allowing the amp to shine brilliantly while maintaining smooth, sweet tones when dialled back. The result is an amplifier that captures the flexibility, power, and tonal balance that defined an era of music history.

At its core, the HDRX 100 is powered by four EL34EH power tubes paired with premium pre-amp tubes and a custom-designed Straight Edge output transformer. The thoughtful power supply and filament design make this 100-watt head remarkably quiet, virtually eliminating the hum and hiss typically associated with vintage-style amplifiers. PRS has equipped the amp with a comprehensive control set including a 3-band TMB tone stack, 3-way bright switch, high-mid gain switch, and presence controls that mirror the historic amplifier while providing modern flexibility.

The internally bridged channels with individual volume controls represent a significant convenience upgrade, removing the need for external jumper cables while allowing players to blend the lead and bass channels for precise distortion and tonal control. Manufactured in PRS Guitars’ Stevensville, Maryland facility, the HDRX 100 represents what Paul Reed Smith describes as “a fairly straightforward build with the right parts and circuit,” maintaining historic specifications where appropriate while making practical substitutions for availability, safety, and performance. PRS recommends pairing the amp with a volume attenuator such as the Koch Loadbox LB120 II, as this is a vintage stock volume amplifier with substantial power output.