This Studer card (Part Number: A949.0427) offers four high - quality analog microphone/line inputs.

Using this Studer card is easy. First, connect it to your D21m Modular I/O System. Then, plug your microphones or line - level devices into the four available inputs. When using, make sure the power supply is stable to avoid signal interference. Keep the card in a dry and clean place. If there is dust on it, use a soft brush to gently clean it. Don't expose the card to extreme temperatures as it may affect its performance.