Shure QLXD24/SM86 H51, Digital UHF Wireless System, Digital UHF wireless system with capacitor capsule SM86, Audio signal: 24 bit / 48 kHz, AES-256 encryption for tap-proof transmission, Up to 72 MHz switching bandwidth, 22 Compatible Channels in an 8 MHz TV Band, Switchable transmission power 1/10 mW, 120 dB dynamic range, Metal handheld transmitter with microphone capsule SM86, Characteristic: Cardioid, 9.5"" metal receiver, Detachable BNC antennas, Ethernet connection for system monitoring and configuration, Frequency transmission via infrared interface, XLR/jack output, Transmitter operation with either 1.5 V AA batteries, or with (optional) SB 900 lithium-ion rechargeable battery, Frequency band: H51 (534 - 598 MHz), Includes PS23 power supply and rack mount