Studer's part number A949.0427 offers four high - quality analog microphone/line inputs, great for various audio setups.

To use this Studer card, simply connect it to your D21m Modular I/O System. You can then connect your microphones or line - level devices to the four analog inputs. When using, make sure your audio devices are powered off to avoid short - circuits. For maintenance, keep it in a dry and clean environment. If there's dust on it, use a soft, dry cloth to gently wipe it. Don't use any harsh chemicals on the card.