The Shure P9TRA-G6 rechargeable wireless in-ear monitoring system keeps both performers and engineers happy. The P9TRA's innovative CueMode lets the mix engineer monitor and store up to 20 separate channels on one bodypack - and make changes to the performers' monitor mix mid-performance. That's cool. Another cool feature is that the P9RA receiver is now rechargeable - no more battery hassles. The system literally configures itself, analyzing frequencies and automatically choosing the clearest, strongest one. This system also includes the P9T transmitter. If you need in-ear monitoring, you'll dig the power and flexibility of Shure's P9TRA Rechargeable.