What tubes does the Ampeg M-12 (6V6 version) - Accordion use?

The Ampeg M-12 (6V6 version) - Accordion uses 3× 12AX7 preamp tubes and 2× 6V6 power tubes.

When was the Ampeg M-12 (6V6 version) - Accordion produced?

The Ampeg M-12 (6V6 version) - Accordion was produced 1960–1965.

Ampeg M-12 (6V6 version) - Accordion preset

Verified · 83/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The M-12 with 6V6 tubes is an accordion and keyboard amplifier from Ampeg's early 1960s lineup. The Instrument channel is optimized for clean, accurate reproduction of accordion's complex harmonic content. 6V6 tubes provide a warm, slightly compressed character well-suited to keyboard and accordion amplification.

Years produced: 1960–1965
Made in: USA
Wattage: 12W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× 6V6

Tags: american, vintage, low-wattage, clean, accordion.

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.