The Shure AD3 is a digital handheld wireless plug-on microphone transmitter compatible with Axient Digital series receivers. The AD3 features a secure XLR connector and supplies 48 V phantom power, allowing you to use any handheld or shotgun XLR microphone with the Axient digital wireless system. The transmitter operates in a single 146 MHz ultrawide UHF bandwidth with selectable 2/10/35mW RF output power and a transmission range up to 330'. It provides up to 8 hours of operation on two AA batteries or an SB900A lithium-ion rechargeable battery (available separately). With a durable, moisture-resistant, lightweight aluminum housing, the AD3 transmitter delivers pristine audio quality and RF performance, AES 256-bit encryption for secure transmission, and advanced rechargeability options, making it ideal for high-profile, sound-reinforcement applications.