| D-Sub 25-pin Connector Pinout | |||
| AES Channel | Single Audio Channel | hot pin | cold pin |
| 1 IN | 1+2 | 1 | 14 |
| 2 IN | 3+4 | 2 | 15 |
| 3 IN | 5+6 | 3 | 16 |
| 4 IN | 7+8 | 4 | 17 |
| 1 OUT | 1+2 | 5 | 18 |
| 2 OUT | 3+4 | 6 | 19 |
| 3 OUT | 5+6 | 7 | 20 |
| 4 OUT | 7+8 | 8 | 21 |
| Ground | Pin: 10, 12, 13, 22, 23, 24, 25 | ||
| not used | Pin: 9, 11 | ||