It works fine at rehearsal and soundcheck, but unfortunately it is insufficient for live shows. I have played two shows with this unit, and both times I had to switch to a cable because of dropouts and stuttering. With the venue full of cell phones, unfortunately the signal becomes too weak, even when standing directly on top of the receiver.
Other than that glaring functional issue, it is a nice unit. It is easy to use. Nice transmitter design. I love that I can use a normal jack-jack cable with it.