This is an Analog Devices Evaluation Board kit for the ADG824, it is manufacturer part number EVAL-ADG824EBZ. The ADG824 evaluation kit contains a fully fitted PCB and a CD that contains the ADG824 data sheet and the EVAL-ADG824 data sheet. The board is fitted with three audio connectors that allow switching between audio devices. All signals applied to the switch can be monitored using the test points provided on the board. This is a NEW part, it has never been used, and is in the original retail packaging. It is sold exactly as shown and does not include any additional parts or accessories.