Kay 515 - Ch1 preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Kay 515 is a mid-range tube combo from Kay's late-1950s catalog, featuring a push-pull output stage with a pair of 6V6 tubes delivering approximately 12–15 watts of clean American tone. The two-channel circuit provides separate inputs for guitar and microphone, reflecting the multi-purpose demands of working musicians and small combos of the era. Kay's Chicago construction gives the 515 a warm, slightly scooped tonal character with responsive dynamics and a pleasing breakup at high volumes. The 515 represents a practical, mid-tier option in Kay's amplifier line that balanced features and price for the working player.

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.