Masco MAP-105 - Main preset

Close · 72/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Masco MAP-105 is one of Masco's higher-powered PA amplifier heads, delivering approximately 105 watts of clean tube power through a complement of output tubes. Originally designed for large venue public address applications, these units were durable, well-engineered, and featured high-quality output transformers. Converted MAP-105 units are prized for their massive clean headroom and ability to power multiple speaker cabinets.

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.