This is the actual firmware for a guitar amp modeller that runs on an ESP32-S3 and reproduces a full NEURAL AMP MODELER A2-FULL profile in real time. The same UI, DSP pipeline and neural network weights that run on the hardware are compiled to WebAssembly and executed in the browser: the amp, cabinet, effects and tuner all run on an audio thread at 48 kHz on a 240 MHz dual-core microcontroller. The interface is identical to the pedal’s touch UI - tap blocks to toggle, hold to edit, Esc to go back - and presets and profiles are the same bytes the board uses, not simplified stand-ins.
Profiles are handled exactly as the hardware expects: a chosen folder is exposed as the board’s SD card, and every .nam and .namb (including subfolders) appears with the same names and IDs the board would show. Loading an original .nam triggers the same fixed-point conversion and tuner the board runs (about a minute) and writes an .s3cache beside it so conversion isn’t repeated. Presets travel with captures; Chrome and Edge can write back to the folder while Safari and Firefox fall back to browser storage. The firmware normally runs on a Waveshare ESP32-S3-Touch-AMOLED-2.06 but is delivered as a Gea Stack app so it also runs on macOS, Windows, Linux, iOS, Android and the web. Source is available under GPL-3.0.
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