LED power indicator & channel display; Audio level indicator for wireless system audio signal level; Independent & adjustable channel volume controls; RF signal indicator for transmitter signal strength; UHF signal for wider range & less obstruction; Up to 8 separate channels to choose from; 1/4 audio output; XLR balanced output; AC/DC adapter power jack; Power supply: 110V-220V; Up to 164ft range;Receiver:; Image & spurious rejection: >70dB; Receiving sensitivity: -105dB; Signal-to-noise ratio: -105dB; Border upon channel rejection: >70dB;Body packs:; RF output: >10dBm; FM modulation; Max deviation: +/-40kHz; Spurious emissions: >55dBc; Nominal current drain: < 40mA; Requires 2 x 1.5V AA batteries; Dim: 9.25W x 1.9D x 1.9H;