Kay K-505 - Normal preset

Close · 76/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Kay 505 is a compact single-channel tube practice amp from Kay's mid-1950s lineup, built in Chicago as part of the company's budget-oriented instrument and amplifier business. Its single-ended circuit employs a 12AX7 preamp feeding a 6V6 output tube, producing approximately 5 watts of warm, compressed tone that breaks up naturally at higher volume settings. The Kay 505 was sold through department stores and mail-order catalogs alongside Kay's budget electric guitars, providing a complete beginner's package at an accessible price. Today these small Kay amps are appreciated for their vintage American character and easy-to-drive single-ended simplicity.

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.