Short answer “no”, long answer “yes, but there’s a better way”.
Natively, Traktor cannot access more than one audio interface simultaneously. There are two different ways of achieving the same end result, however, depending on whether you’re using a PC or a Mac. In OS X you can create an Aggregate Core Audio Device, which lets you map the channels of multiple audio interfaces individually; in Windows, you have to use Asio4All which can sometimes cause audio glitches and latency issues.
Short answer “no”, long answer “yes, but there’s a better way”.
Natively, Traktor cannot access more than one audio interface simultaneously. There are two different ways of achieving the same end result, however, depending on whether you’re using a PC or a Mac. In OS X you can create an Aggregate Core Audio Device, which lets you map the channels of multiple audio interfaces individually; in Windows, you have to use Asio4All which can sometimes cause audio glitches and latency issues.
There is, however, a far simpler way of achieving your goal; take the RCA output from Master 2 or Rec out into the built-in line in of your PC/laptop, set it as the default recording device, and use any old WAV/MP3 recorder to capture your mix. No glitches, no latency issues, no hassle I use the same method myself for recording my mixes, except my mixer connects directly to my PC via USB and offers up a Master output.