This Studer card, part number A949.0427, offers four high - quality analog microphone and line inputs, great for your D21m Modular I/O System.

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. Connect your microphones or line sources to the four analog inputs. Power on the system and start enjoying clear audio. When handling the card, avoid touching the electronic components with your bare hands to prevent static damage. Keep the card in a clean and dry environment. If you need to clean it, use a soft, dry cloth. Regularly check the connections to ensure they are secure for optimal performance.