Phausto is a Pharo package and API crafted to enable fast and accessible Digital Signal Processor (DSP) design. It is powered by an embedded Faust engine, granting users direct access to cutting-edge algorithms that researchers worldwide have implemented into the Faust standard libraries. Thanks to its exporter methods, Phausto allows synthesisers and effect built within Pharo in a [CMajor] patch or on a Bela board.