The Endorphin.es Shuttle Control is a Eurorack synthesizer module designed for use in a modular synthesizer system. It is a multi-purpose module that can be used as a sequencer, a drum machine, an arpeggiator, and more. It features a 16-step sequencer, with each step having its own individual control over pitch, velocity, gate length, and more. It also has a built-in MIDI to CV converter, allowing it to be used as a controller for other Eurorack modules.