Supro S6422TR (also Gretsch G6152, Airline 62-9035) - Normal preset

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

The Supro S6422TR was sold under multiple brand names by Valco, appearing identically as the Gretsch G6152 and Airline 62-9035, illustrating the widespread OEM manufacturing Valco supplied to catalog brands. It features two channels, tremolo, and reverb in a compact combo, delivering the characteristic Supro brightness and raw American character. The shared design across multiple brands makes it one of the more historically documented Valco circuits.

• Years produced: 1963–1968
• Made in: USA
• Wattage: 14W
• Channels: 2
• Preamp tubes: 2× 12AX7
• Power tubes: 2× 6973

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.