The MASTER module is the base of every AE modular system - it contains;

- The voltage regulation (5V) for the power supply of the modules
- MIDI input (minijack; Breakout cable to DIN-5 socket is available separately)
- In / out-sockets (3.5mm minijack) for audio out and / or interfacing with a Eurorack system
- All bus signals (CV, GATE, CTRL, MIDI clock / start / stop) as patch sockets

The power supply is a 9V DC adapter; it can be connected either at the side or on the top of the module.