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1970 Hiwatt DR504 Custom 50 Vintage Tube Amp Head Hylight Era UK, Serviced & Retubed


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Up for sale, a 1970 Hiwatt Custom 50 DR504 head in excellent condition and in perfect working order. This very original head was freshly serviced by Andy Marshall at THD, with a recapped power supply and full retube with Mullard EL34s. The head delivers thick crunch and pummeling low end grind. Extremely powerful, efficient and searing, this Hiwatt can achieve saturated roar and robust cleans, as commanding and bass-rich as any vintage British tube amp with an incredibly dynamic, touch-sensitive responsiveness.

The amp features a four input, two-channel circuit (Normal and Bright). Each channel has its own dedicated Volume knob, with a global three-band EQ and Presence knob, followed by a Master Volume ensuring overdrive and grind at desired volumes. Essentially a 50 watt version of the venerable DR103, this amp has the headroom and muscle indicative of the early Hiwatt sound.

The circuit is very original and freshly serviced, with stock Partridge transformers. The preamp retains a bevy of original mustard caps, and the power supply has been fully recapped. All of the original pots are intact, with date codes spanning the 26th and 42nd weeks of '69.

The original Hylight-era Hiwatt badge is intact with a serial number dating to 1970. The tubes include a properly biased pair of Mullard EL34 power tubes, with all modern valves in the preamp as well. All hardware is original, and all stock plastics are accounted for, with a full complement of black chicken head knobs and a large Hiwatt badge. Save for some oxidation on the chassis, the amp is remarkably well-kept with clean black tolex that shows only light wear predominantly on the forward lower edge of the enclosure.