A $29.90 open-source board brings polyphonic synthesis, programmable effects, and a flexible hardware format to DIY sound design, standalone setups, and 10HP Eurorack systems. Its compact size makes it an approachable platform for building a playable instrument or embedding a sound engine in a larger project.
At its core, AMYboard runs the AMY synthesizer engine on an ESP32-S3 and supports MicroPython, so users can shape patches, effects, and custom behaviors in code. The system is designed for a wide range of synthesis styles, including virtual analog, FM, wavetable, sample-based, PCM, additive, physical modeling, subtractive, noise, and other digital approaches.
Connectivity is broad for a board this size, with MIDI in and out, USB-C, SD card storage, line in and out, S/PDIF in and out, and CV/gate connections for modular integration. It is described as having 8 voices of polyphony and a filter section with lowpass, highpass, bandpass, resonant, and multimode options, making it useful both as a ready-to-play instrument and as a programmable sound platform.
