This Studer card, with part number A949.0427, offers four analog microphone/line inputs, perfect for enhancing your audio setup.

To use this Studer card, first make sure your D21m Modular I/O System is powered off. Then, carefully insert the card into the appropriate slot. After that, connect your microphones or audio sources to the four analog inputs. When you power on the system, the card should start working. Remember to handle the card gently to avoid any damage. For maintenance, keep it in a clean and dry place. If you notice any issues, power off the system immediately and check the connections.