What tubes does the Supro S6611 - Normal use?

The Supro S6611 - Normal uses 1× 12AX7 preamp tubes and 1× 6973 power tubes.

When was the Supro S6611 - Normal produced?

The Supro S6611 - Normal was produced 1962–1968.

Supro S6611 - Normal preset

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

The Supro S6611 is a small single-channel combo from Valco's Supro range, built around the 6973 output tube for a warm, naturally compressed tone. These compact amps were popular student and practice instruments that delivered surprising tonal character from their modest power ratings. The S6611 captures the essential Supro voice in an entry-level package.

Years produced: 1962–1968
Made in: USA
Wattage: 7W
Channels: 1
Preamp tubes: 1× 12AX7
Power tubes: 1× 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.