What tubes does the Kay 703 (2nd version) - Normal use?

The Kay 703 (2nd version) - Normal uses 12AX7 preamp tubes and 6V6, 6V6 power tubes.

When was the Kay 703 (2nd version) - Normal produced?

The Kay 703 (2nd version) - Normal was produced 1964–1968.

Kay 703 (2nd version) - Normal preset

Close · 68/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Kay 703 (second version) is a revised iteration of the popular 703 chassis, produced in the mid-1960s with updated component specification and minor circuit changes reflecting cost and availability shifts in the period. The fundamental character remains consistent with the first version — a compact, single-channel 6V6 combo with natural, touch-responsive breakup — but the second version may exhibit slight differences in tone stack tuning or transformer specification. Like its predecessor, it is prized for its lo-fi charm and easy-to-drive saturation. The two versions are distinguishable by chassis markings and component date codes.

Years produced: 1964–1968
Made in: USA
Wattage: 12W
Channels: 1
Preamp tubes: 12AX7
Power tubes: 6V6, 6V6

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.