Also, just for clarification, it will do analog in and analog out, if you have that option. Tact did a weird thing with the names of their products. The 2.2 was their first room correction system / pre-amp / dac. They quit making it and started producing the 2.0. Kind of misleading as names go, because you would think that the 2.2 would be a more current product than the 2.0, which it's not. The 2.0 isn't exactly the same thing as the 2.2, as I believe the 2.2 had an internal crossover for subs, and the 2.0 does not. The 2.0 can also be used exclusively for room correction (digital in and digital out). The 2.2 has no digital out, and cannot function independently from it's built-in DAC. So I guess from that standpoint, they are different models. Now Tact has come out with the latest version of the 2.2, which is called the 2.2X (this is what I own). The 2.2X will function as a room correction system independent of the DACs, and also has a subwoofer crossover. Sort of a combination of the features of the 2.0 and 2.2. All of the current Tact products are modular and upgradable.
That's my understanding of the history of Tact products, anyway. I use an Altis Audio CDT 3 transport, which is fabulous. Call Tact if you have any questions. They always answer the telephone during business hours (EST) and are very helpful.