The document is a user guide for ADAU1401A, ADAU1401, ADAU1701, and ADAU1702 SigmaDSP evaluation board. The evaluation board interfaces with the SigmaStudio software via USB and provides a full range of analog and digital inputs and outputs. Digital I/O connections are available in both S/PDIF and 3-wire serial data formats. The evaluation board is powered by a single supply and features voltage regulation on the board. It includes an on-board self-boot EEPROM for independent operation without the SigmaStudio software. Push-buttons, LEDs, potentiometers, and other interface options on the GPIO board can be connected to enable GPIO control. The EVAL-ADAU1401AEBZ can also be used for evaluating pin-compatible ADAU1701 and ADAU1702 SigmaDSPs.