Yep, MIDI Out. And then a lot of controllers sync with the DAW and so they have MIDI In as well. I.e. let's say I have a fader on my controller mapped to channe

Yep, MIDI Out. And then a lot of controllers sync with the DAW and so they have MIDI In as well. I.e. let's say I have a fader on my controller mapped to channel A's volume if I change the volume on either the DAW or on the controller they will sync so that they both display the correct volume level automatically. If I change the volume through the controller then it's sending MIDI Out to the DAW if I change the volume on the DAW directly with my mouse say then it's going to send MIDI In to my controller. Basically you're cutting out the need for a middle-man. And thanks. :D