Please refer to this chart for a quick overview of the channel count for DAD AX32, Penta 720 and Penta 721s depending on what sample rate you are running at.
| 44.1/48 kHz | 88.2/96 kHz | 176.4/192 kHz | 352.8/384 kHz | |
| AES | 2 | 2 | 2 | N/A |
| MADI | 64 | 32 | 16 | 8 |
| Dante (base unit) | 64 | 32 | 16 | N/A |
| Dante Exp Card* | 128 | 64 | 32 | N/A |
| SDI** | 16 | N/A | N/A | N/A |
| SPQ (no I/O) | 128 | 64 | 32 | 16 |
** Also applies to Penta 721s-SDI
NOTE! The first 4 rows also apply to DAD DX32R
Avid MTRX
If you use Avid’s MTRX, the chart is also relevant. However, since you have DigiLink ports, here is the additional info:
| MTRX | 44.1/48 kHz | 88.2/96 kHz | 176.4/192 kHz | 352.8/384 kHz |
| DigiLink (base unit, per port) | 32 | 32 | 32* | N/A |
| DigiLink Card (per port) | 32 | 32 | 32** | N/A |
** Card channel limit is 32. At 176.4/192 kHz, only one port can be used.