Hiwatt Power Supply 100W preset

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

Power supply schematic for the Hiwatt DR103 100-watt amplifier. Documents the high-voltage rectifier and filter capacitor bank that powers the four-EL34 output stage and ECC83 preamp.

• Years produced: 1969–present
• Made in: UK
• Wattage: 100W

Tags: british, vintage, sub-circuit, power-supply.

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.