What tubes does the Park 20W 1273 use?

The Park 20W 1273 uses ECC83 preamp tubes and EL34 power tubes.

When was the Park 20W 1273 produced?

The Park 20W 1273 was produced early 1970s.

Park 20W 1273 preset

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

The Park 1273 is another variant of Park's 20-watt tube amp line, produced during the 1970s when Park was operating as a Marshall-adjacent brand. These smaller-wattage Park heads are tonally similar to the Marshall 18-watt and 20-watt designs — raw, touch-sensitive, and capable of natural power-amp breakup at manageable volumes. The 1273 designation suggests a later production run compared to the 1231, potentially with minor circuit revisions.

Years produced: early 1970s
Made in: UK
Wattage: 20W
Channels: 2
Preamp tubes: ECC83
Power tubes: EL34

Tags: british.

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.