Giannini A-102 preset

Close · 78/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The A-102 is a valve power amplifier from Giannini, the Brazilian instrument maker best known for its guitars. Separate Pre and Amp inputs feed a twin-triode input stage with a level control, then a twin-triode phase splitter driving a fixed-bias push-pull pair of output valves. A selector picks output taps from 4 to 32 ohms with a monitor output, and the supply uses a BY127 bridge with a valve-regulated screen supply. Valve types are not printed on the drawing.

• Made in: Brazil
• Channels: 1

Tags: brazilian.

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.