Hiwatt Dr 103 112 Output preset

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

Output stage schematic for the Hiwatt DR103/DR112. Four EL34 power tubes in a carefully engineered push-pull output section deliver the Hiwatt DR series' signature clean power and dynamic response.

• Years produced: 1969–present
• Made in: UK
• Wattage: 100W
• Channels: 2
• Preamp tubes: 4× ECC83
• Power tubes: 4× EL34

Known for: Pete Townshend, David Gilmour.

Tags: british, clean, vintage, sub-circuit, high-headroom.

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.