2 Audio Interfaces on a DJM700

Hello Guys,

im concidering to buy a used DJM700 Mixer. The DJM700 has (of course) 4 Channels for Input. My Question is, do anyone from you guys know if the CD Input behaves exactly like the regular line imput. The Reason is that, we use 2 NI Audio Interfaces for a dj set. One is used with traktor scratch and Timecodes (Vinyl oder CDJ) and the other Interfaces is connected to 2 controllers.

Hope anyone can help me out ... Thx Guys!