Park 20W 1273 preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Park 1273 is a 20-watt valve combo (1980 drawing). It has high and low inputs, a gain stage into a treble/bass stack, a second gain stage and a long-tail-pair inverter. It drives two fixed-bias output pentodes, EL84s by type.

• Made in: UK
• Wattage: 20W
• Channels: 1
• Preamp tubes: 2× ECC83
• Power tubes: 2× EL84

Tags: british, breakup, crunch, el84, low-wattage.

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.