Concert 88x Guitar is a UHF wireless system consisting of the CB88 beltpack transmitter and CR88x receiver. It offers true-diversity reception, infrared channel locking, and 100 operating frequencies across a 25 MHz bandwidth, with an approximate 300 ft line-of-sight range. The CB88 provides adjustable input gain and a silent mute switch, running up to eight hours on two AA cells. The CR88x supplies balanced XLR and unbalanced 1/4 in outputs for guitar rigs.