# External Mixing Question **URL:** \ **Category:** General Discussion\ **Created:** [December 27, 2012, 6:45pm UTC](https://forum.djtechtools.com/t/external-mixing-question/51238 "2012-12-27T18:45:22Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![mdecasperis95](https://avatars.discourse-cdn.com/v4/letter/m/bc79bd/32.png) [@mdecasperis95](https://forum.djtechtools.com/u/mdecasperis95)\ **Post date:** [December 27, 2012, 6:45pm UTC](https://forum.djtechtools.com/t/external-mixing-question/51238/1 "2012-12-27T18:45:22Z")
**External Mixing Question** Hey guys, I just downloaded Traktor Pro 2 today and I am trying to mix 2 channels with my x1 and my 2 channel mixer. I have a numark djio sound card and have connected output 1 from the sound card to channel 1 line on my mixer and the same for output 2 on the sound card to channel 2 line on my mixer. When I boot up Traktor and everything is connected, I switch the audio input in preferences to the Numark Djio. I change mixing from internal to external. But when I start playing tracks, both tracks are playing off of channel A on my mixer. When I switch the cross fader over to channel B on my mixer, I get no sound. Both tracks are playing off of one channel. How do I fix this? Do I have to change some settings in Traktor? Let me know. Thanks! Mike ---
**Author:** ![P4ULSON](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/p4ulson/32/12578_2.png) [@P4ULSON](https://forum.djtechtools.com/u/P4ULSON)\ **Post date:** [December 27, 2012, 9:09pm UTC](https://forum.djtechtools.com/t/external-mixing-question/51238/2 "2012-12-27T21:09:00Z")
> [@mdecasperis95](#): > > Hey guys, > > I just downloaded Traktor Pro 2 today and I am trying to mix 2 channels with my x1 and my 2 channel mixer. I have a numark djio sound card and have connected output 1 from the sound card to channel 1 line on my mixer and the same for output 2 on the sound card to channel 2 line on my mixer. When I boot up Traktor and everything is connected, I switch the audio input in preferences to the Numark Djio. I change mixing from internal to external. But when I start playing tracks, both tracks are playing off of channel A on my mixer. When I switch the cross fader over to channel B on my mixer, I get no sound. Both tracks are playing off of one channel. How do I fix this? Do I have to change some settings in Traktor? Let me know. > > Thanks! > > Mike right now your having all your sound come out of output 1 of your sound card… in settings go to OUTPUT ROUTING Choose external at the top then set output deck A to output 1 of sound card and output deck b to output 2 of your sound card.