What tubes does the Magnatone M-4 use?

The Magnatone M-4 uses 2× 12AX7, 1× 12AU7 preamp tubes and 2× 6GW8 power tubes.

When was the Magnatone M-4 produced?

The Magnatone M-4 was produced 1963.

Magnatone M-4 preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

A small Magnatone combo with high, medium and low inputs into a single channel. It has loudness and tone controls, reverb, and Magnatone's varistor-based vibrato, driving a pair of 6GW8s in push-pull into an 8-inch speaker. It brings the brand's true pitch-shifting vibrato to a compact amp.

Years produced: 1963
Made in: USA
Channels: 1
Preamp tubes: 2× 12AX7, 1× 12AU7
Power tubes: 2× 6GW8

Tags: american, vintage, vibrato, reverb, low-wattage.

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.