This Studer card (Part Number: A949.0427) offers four analog microphone/line inputs, great for audio systems.

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 audio lines to the four input ports. When powering on the system, ensure a stable power supply. For maintenance, keep the card in a clean and dry environment. Avoid exposing it to extreme temperatures or moisture. If you encounter any issues, turn off the system and check the connections. If the problem persists, contact customer support.