Airline Wards Airline GDR-8514A/8515A - Channel A preset

Close · 78/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Wards Airline GDR-8514A and GDR-8515A are reverb-equipped tube combos from Montgomery Ward's Airline line, manufactured by Valco and offering spring reverb alongside the characterful GDR series circuit. These dual-model variants share the same basic architecture with minor specification differences, following the common Valco/Airline practice of offering several closely related models at slightly different price points. The built-in reverb adds lush spatial depth to the raw Valco tube tone.

• Years produced: 1960–1968
• Made in: USA
• Channels: 2
• Preamp tubes: 12AX7
• Power tubes: 6V6

Tags: american, vintage.

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.