Alto Mistral 900/1500 - Ch A preset

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

The Alto Mistral 900/1500 series provided mid-tier solid-state amplification within the Mistral range, suitable for club PA, monitor systems, and instrument amplification. These models balanced output power with a compact, road-worthy chassis and were popular for touring rigs that required multiple channels of amplification in a single rack bay. The consistent Mistral circuit platform meant technicians could service all models with the same parts and knowledge.

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.