This Studer card (Part Number: A949.0427) offers four high - quality analog microphone and line inputs, providing excellent audio input solutions for your system.

Using this Studer microphone/line input card is easy. First, make sure your D21m modular I/O system is powered off. Then, carefully insert the card into the appropriate slot in the system. Connect your microphones or line - level devices to the four available inputs. When powering on the system, ensure a stable power supply. As for maintenance, keep the card in a clean and dry environment. Avoid touching the electronic components with your bare hands to prevent static damage. If you notice any performance issues, check the connections first and then consider professional servicing.