What tubes does the Supro Late 50s 1x6V6 Amp - Normal use?

The Supro Late 50s 1x6V6 Amp - Normal uses 1× 12AX7 preamp tubes and 1× 6V6 power tubes.

When was the Supro Late 50s 1x6V6 Amp - Normal produced?

The Supro Late 50s 1x6V6 Amp - Normal was produced 1957–1960.

Supro Late 50s 1x6V6 Amp - Normal preset

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

This late 1950s Supro single 6V6 amp represents the entry-level portion of Valco's product range, offering simple but characterful amplification for the student and amateur market. The single-ended 6V6 output produces even-order harmonic distortion that gives these small amps a warm, musical quality beyond their modest power. Amps of this type were instrumental in shaping the playing of countless early rock and roll and blues musicians.

Years produced: 1957–1960
Made in: USA
Wattage: 5W
Channels: 1
Preamp tubes: 1× 12AX7
Power tubes: 1× 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.