This Studer card, with part number A949.0423, is designed specifically for D21m and D23m. It features only input source converters (SRCs), offering high - quality audio input capabilities.

To use this Studer card, first make sure your D21m or D23m device is powered off. Then carefully insert the card into the appropriate slot in your device. Once it's inserted, power on your device and you're ready to start using the audio input. When handling the card, be gentle to avoid any physical damage. Also, keep it away from dust and moisture. For maintenance, you can clean the card's connectors with a soft, dry cloth every few months to ensure good connectivity. If you have any problems, don't try to repair it yourself but contact Studer's customer support.