Studer Part Number: A949.0427. This card offers four high - quality analog microphone and line inputs, providing excellent audio input solutions for your D21m system.

To use this Studer input card, simply install it into your D21m modular I/O system. Connect your microphones or audio devices to the four analog inputs. Make sure the power to the system is off when installing the card to avoid any electrical issues. When it comes to maintenance, keep the card clean and free from dust. If you notice any problems with the audio quality, check the connections first. If the issue persists, it's best to contact Studer support.