I am looking for an inexpensive IEM system. I will mainly be using it to send a signal to my powered speakers from an iPod or something but would like to be able to use them for a modest IEM system. Any experience with the AS-900 system? I already have some Shure SCL3 earbuds I can use in lieu of the included headphones. Anyway, just looking for other TBers that have used it. Fixed channel but my Sony wireless is 2.4 Ghz so that shouldn't interfere at all.