You have three options:
- Conventional: It will run with the throttle on your transformer.
- MTH 50-1033 DCS Remote Commander: Provided the locomotive has a FACTORY RESET (easy to do w/ a full DCS system). If it is new out-of-the-box, you're good to go. $60 list
- DCS: Yes you can pony-up for a full DCS system. You'll also want MTH 50-1032 cable $25 list. This connects the TIU to the TMCC Command Base.
The rule of thumb is; you can run TMCC w/ DCS, but you can't run DCS w/ TMCC.