Hello,
i can also confirm it works without problems with a Delta 2496 on 10.9 but am I the only one who has the input monitoring the output!? I mean if I record something via the Delta 2496 input it also picks up everything playing on the output.
This is strange.
Maybe this is coming from the software you are using to do the recording.
The card itself does not do anything about recording.
INPUTS
Input 1 = micro
Input 2 = micro
Input 3 - 8 = lines (ex jack)
From your recording system (ex Ableton), you can assign a track to one of these inputs. This track will only record the input you assigned it to.
OUTPUTS
Output 1 = L of card's mixer
Output 2 = R of card's mixer
Output 3-8 = your choice
From your recording system, you typically use Output 1 and 2 as the output from the Mix (of Ableton for ex).
When the ableton tracks play, they do not use the inputs of the card. They are mixed by Ableton mixer and go to the card's output 1 and 2.
When you record a track (for ex through input 1 of the card) while playing other tracks, Ableton only records this track. The other tracks are just played toward Ableton's Mixer.
All this may be obvious to you, just in case.
Let me know which DAW you are using and how, in case I have an idea.
Thanks