The QLXD2/SM87 handheld transmitter provides you with legendary Shure sound and rock-solid RF performance. Featuring 24-bit digital audio and efficient RF spectrum usage, the QLXD2 maintains a clear, 330' signal to cut through the noise of any venue. With interchangeable capsules like the renowned SM58, this transmitter offers a dynamic vocal sound signature in an instant. AES 256-bit encryption keeps your signal secure, while over 120dB of dynamic range ensures pristine sound quality. Select 1 or 10 mW of RF power and up to 9 hours of battery life to suit any application. An easy to navigate LCD menu and IR sync make the QLXD2 a breeze to operate. Rugged and road-ready, the QLXD2/SM87 handheld transmitter delivers wireless freedom for your vocals.