The RT72A-08 was available in the following 3 models:
| Model | Channels 1-3 | Channels 4-6 |
| 72A-08 | 16-bit A/D | 24-bit |
| 72A-08/6 | 24-bit A/D | 24-bit |
| 72A-08/3 | not used | 24-bit |
Responses are listed by A/D type below, independent of model type or channels recorded.
Mary Templeton 10/25/2007