Hiwatt 100W Dr112 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Hiwatt DR112 is a 100-watt combo variant of the legendary DR103 head, built to the same exacting hand-wired, military-spec standards that defined Dave Reeves' workshop. It delivers the DR103's signature combination of glassy headroom and surgical note definition in a self-contained cabinet, making it popular for players who needed the full Hiwatt experience without a separate enclosure. The amp's stiff power supply and conservative bias keep the EL34s running cool and clean well into stage volumes, producing a response that rewards dynamic picking technique with remarkable articulation.

• Years produced: 1969–1983
• Made in: UK
• Wattage: 100W
• Channels: 2
• Preamp tubes: 4× ECC83 (12AX7)
• Power tubes: 4× EL34

Known for: Pete Townshend, David Gilmour.

Heard on: Won't Get Fooled Again — The Who (1971).

Tags: british, clean, vintage.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.