Matchless Spitfire preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Spitfire is a 15-watt single-channel Matchless combo with two EL84s in cathode-biased class A and no negative feedback. Two inputs feed a single 12AX7 gain stage, then a bright-capped Volume and one Tone control, so the amp breaks up early at moderate volume. A 12AX7 long-tail phase inverter with a Master control after it drives the EL84s, with a 5AR4 valve rectifier, choke filtering, 4/8-ohm outputs and a line out.

Known for: Erick Hansel, Jewel, Tyler Ramsey.

Tags: american, boutique, el84, class-a, low-wattage, breakup.

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.