Kay 703-C - Normal preset

Close · 72/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Kay 703C is a companion variant of the Kay 703, distinguished by a cabinet modification or cosmetic update — the 'C' suffix typically indicating a cabinet or color specification change in Kay's naming convention. Its circuit is essentially identical to the 703, maintaining the same 6V6-based single-ended or modest push-pull output with a single-channel preamp. The tonal character is the same warm, naturally saturating American tube sound that made the 703 a Chicago blues and garage rock favorite. The 703C is rarer than the standard 703 and is collected as much for its cosmetic distinction as for its sound.

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.