Airline 62-8500S - Normal preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Airline 62-8500S is a small student-grade combo made by Valco for Montgomery Ward's Airline house brand. It uses a straightforward single-ended circuit with a 12AX7 preamp and a 50C5 or 35W4 power tube, delivering a raw, harmonically rich breakup at modest volumes. The tone is nasal and compressed, characteristic of Valco's budget builds, with a bright, midrange-forward voice that responds well to single-coil pickups. These amps have attracted a cult following among lo-fi and garage players seeking inexpensive, easily saturated vintage character.

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.