Supro 1959 (Late 50s 1x6V6) - Main preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Supro 1959 is the Valco-made amp widely cited as one of Jimmy Page's primary recording tools for Led Zeppelin's debut album, lending it legendary status in rock history. Its small 18-watt single-ended or push-pull circuit saturates quickly, producing a dense, harmonically rich overdrive at manageable studio volumes. The 1959 Supro became a cornerstone of the early heavy rock tone palette.

• Years produced: 1958–1963
• Made in: USA
• Wattage: 18W
• Channels: 1
• Preamp tubes: 2x 12AX7
• Power tubes: 2x 6L6

Known for: Jimmy Page.

Heard on: Communication Breakdown — Led Zeppelin (1969).

Tags: american.

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.