It should work fairly well since it supports ASIO. For the last 2 months I've been using a cheap usb X-fi 5.1ch It's allowing me latency setting of 4ms on 44.1Khz on mac osx. It's not too shabby but i would be hesitant for live performances. I just map the rear output as my monitor, and it's front as main. Of course since my family was able to send me my Audio8dj the Soundblaster has seen no use with traktor.
Bookmarks