The AP42 Performance Series Dual-Channel Handheld Wireless System from Audix includes the R42 2-channel diversity receiver and two H60/OM2 handheld transmitters. The R42 receiver operates on a frequency range of 554 to 586 MHz and offers one-touch auto scan searches for clear channel. The unit features an internal antenna combiner for dual antenna operation. It comes in a 19" rackmount chassis and includes BNC cables for front mounting antennas. Thanks to the one-touch sync function, this receiver easily links to the H60 handheld transmitters via infrared beam. Each handheld transmitter comes with the OM2 dynamic vocal microphone capsule. These transmitters feature a slim-line body design and durable metal housing and are compact, well-balanced, and comfortable to hold. They come with a soft mute switch which also serves as an on/off switch when needed. The transmitter units also feature a high-contrast LCD display with group, channel, and battery indicator.