This DiGiCo D2-Rack digital stage box is a great audio solution. It comes equipped with two 8-output Line Out cards, which provide excellent audio output. The package includes the correct power supply for easy setup. There is a minor issue - a few screws are missing on the front panel, but this doesn't affect the unit's functionality at all.

Using this DiGiCo D2 - Rack digital stage box is easy. First, connect it to the correct power supply that comes with it. Then, you can start connecting your audio devices to the 48 inputs and get your audio outputs from the 32 outputs or the two 8 - output Line Out cards. When using it, make sure the connections are secure. As for maintenance, keep it in a dry and clean place. Although the missing screws on the front panel don't affect functionality, it's a good idea to check the unit regularly for any other loose parts. If you notice any strange noises or performance issues, stop using it and check the connections first.