Hiwatt DR203 PA 200 preset

Close · 75/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Hiwatt DR203 is a 200-watt tube PA head. Six input channels, built on three ECC83s, each have their own volume and bass/treble network, and mix into an ECC83 mixer and cathode follower with master volume and presence. The drive stage feeds six fixed-bias EL34s, three per side, into a Partridge TH650C output transformer with 4, 8 and 16-ohm taps, from solid-state bridge supplies. Built for vocals and mixed sources at high, clean volume.

• Made in: UK
• Wattage: 200W
• Channels: 1
• Power tubes: 6× EL34

Tags: british, vintage, high-wattage, clean, hand-wired.

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.