Kay 515 - Channel 1 preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Kay 515 is a two-channel tube combo. Each channel has two inputs, its own volume and tone and its own 12AX7 with paralleled triodes, mixing into a 12AX7 phase inverter that drives two cathode-biased 6V6s on a 5Y3 rectifier, for about 15 watts. A fourth 12AX7 runs a tremolo oscillator with a footswitch jack. There is a standby switch, ground-reversing switch and extra speaker jack. Warm and clean, breaking up at high volume.

• Made in: USA
• Wattage: 15W
• Channels: 2
• Preamp tubes: 4× 12AX7
• Power tubes: 2× 6V6

Tags: american, vintage, 6v6, two-channel, clean.

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.