What tubes does the Valco 1212 - Main use?

The Valco 1212 - Main uses 2× 12AX7 preamp tubes and 2× 6V6 power tubes.

When was the Valco 1212 - Main produced?

The Valco 1212 - Main was produced 1950–1955.

Valco 1212 - Main preset

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

The Valco 1212 is an early 1950s design from the Chicago manufacturer, sold under the National brand and featuring the dual-channel configuration typical of Valco's versatile approach to amplifier design. The push-pull 6V6 power section delivers clean, warm tones with natural compression that made these amps popular with both guitarists and steel players. The 1212 captures Valco at a pivotal moment in their transition from prewar to postwar amplifier design.

Years produced: 1950–1955
Made in: USA
Wattage: 10W
Channels: 2
Preamp tubes: 2× 12AX7
Power tubes: 2× 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.