What tubes does the Magnatone 441A use?

The Magnatone 441A uses 1× 12AX7A, 1× 12AU7A preamp tubes and 2× 7189A power tubes.

When was the Magnatone 441A produced?

The Magnatone 441A was produced 1965–1966.

Magnatone 441A preset

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

The Magnatone 441A is a 1965 single-channel bass combo from Magnatone's later line, driving a 15-inch speaker. High- and low-gain inputs feed a 12AX7A/7025 stage, a Tone control and Volume, then a second 12AX7A stage and a 12AU7A long-tailed-pair phase inverter with negative feedback. A fixed-bias push-pull pair of 7189A output valves runs from a solid-state rectifier, for a clean, firm low end.

Years produced: 1965–1966
Made in: USA
Channels: 1
Preamp tubes: 1× 12AX7A, 1× 12AU7A
Power tubes: 2× 7189A

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.