THIS IS A 8 ANALOG IN AND 8 OUT ANALOG OUT THAT ADDS 8 MORE ANALOG INPUTS AND 8 MORE ANALOG OUTPUTS FOR THE DA-7 CONSOLE . THIS CARD WAS NEVER USED I WAS THE PANASONIC DEALER FOR 10 YEARS. AD/DA Card, WR-ADDAWR-ADDAOUT+ 4dB 1 0 kIN8ch AD/DA CardAD/DA CardThe AD/DA card is an analog-to-digital/digital-to-analog converter. Use thiscard to input an external analog device to the DA7. Since the DA7 only has16 analog inputs accessible from the Rear Panel, using the AD/DA card in theD-I/O slots permits routing additional sources into Channel INPUTS 17-25and 26-32.The AD/DA card has two DB-25 connectors, one for input signals and onefor output signals.