Since mackie and PreSonus are using Ipods, Iphones and Ipads to control their devices, why have they not developed the ability to use your phone as an IEM device? for example, with Qmix on the SL boards, each person can control their own monitor mix (6 mixes on the 16.4.2, 10 on the 24.4.2), but why not be able to simply plug your headphones into your iphone, throw it in your pocket, and bam.... wireless IEM set up with monitor control all in one package on your phone. IT works reverse with Bluetooth, sending audio from the phone to a receiver... why not just reverse the path? I have no technical skill whatsoever, but this is a no brainer that PreSonus should jump on! I would use it and it would revolutionize the IEM industry for the weekend warrior musician.