Hey Guys- There is a great video on You Tube about how to do this. The AUX tracks are added in your DAW.I normally use 15 tracks (aux) in digital performer8. On Superior Drummer, go to the bottom of the mixer where the outputs are. Output 1-2 go to routing the source to your designated output. The first kick channel is assigned Out3-4, 2nd kick out 5-6, continue across and you'll end up in the ambient room settings. What is the difference. Being able to plug in Pultec EQ to any track, 16 different reverbs, and EZ mix 2 is available in 64 bit, where as the superior has 16bit. when you get to the end , there is a much deeper depth to these tracks. Could just be me, i would never claim to have the answers, but to my ears, and 40 years of playing, this sounds convincing...Merry Christmas to all-Bobby