The SPR4 from AKG is a compact wireless bodypack receiver designed for use with the IVM4 wireless monitoring system. The receiver has auto setup and environment scan functions to get you up and running quickly. You can choose from preprogrammed frequency banks or manually choose from the 1200 available frequencies.
The individual mix function lets you set up a personalized mix, even in areas where no separate monitor mixer is available. The receiver case is made from magnesium to withstand the rigors of professional use. It has a combination power/volume knob and it will accept any set of in-ear monitors with a standard 3.5mm stereo plug. The unit can operate for up to eight hours on two AA batteries, and a convenient belt clip is included.