What tubes does the Masco MAP-120 - Channel 1 use?

The Masco MAP-120 - Channel 1 uses 3x 12AX7 preamp tubes and 8x 6L6 power tubes.

When was the Masco MAP-120 - Channel 1 produced?

The Masco MAP-120 - Channel 1 was produced 1954–1962.

Masco MAP-120 - Channel 1 preset

Close · 75/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Masco MAP-120 is among the most powerful amplifiers in the Masco PA lineup, capable of driving large hall speaker arrays with 120 watts of tube power. Its output stage uses an octuplet of output tubes in push-pull configuration, requiring a massive power transformer and a robust chassis. Converted MAP-120 units are extremely rare and represent the pinnacle of Masco's engineering ambitions.

Years produced: 1954–1962
Made in: USA
Wattage: 120W
Channels: 2
Preamp tubes: 3x 12AX7
Power tubes: 8x 6L6

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.