What tubes does the Magnatone M15A - Channel 1 use?

The Magnatone M15A - Channel 1 uses 4× 7025, 3× 12DW7/7247, 2× 12AU7 preamp tubes and 4× 7189A power tubes.

When was the Magnatone M15A - Channel 1 produced?

The Magnatone M15A - Channel 1 was produced 1965–1967.

Magnatone M15A - Channel 1 preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Magnatone Custom M15A is the 1965 update of the M15 stereo combo. Two channels, each with a contour switch now placed after a second gain stage with an extra 7025 to make up gain, feed Magnatone's stereo pitch vibrato and a reverb whose transistor recovery gave way to a 12AX7. Two 12DW7 inverters drive two push-pull pairs of 7189As into two 12-inch speakers, one per side, for its shimmering stereo vibrato.

Years produced: 1965–1967
Made in: USA
Wattage: 38W
Channels: 2
Preamp tubes: 4× 7025, 3× 12DW7/7247, 2× 12AU7
Power tubes: 4× 7189A

Tags: american, vintage, vibrato, reverb, stereo, two-channel.

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.