The R300-HD is Wireless Handheld Microphone System. Includes R300 Receiver, and HT-300 Handheld Transmitter. The R300 Receiver with a sleek, low-profile design and durable construction, the R300 receiver system is equally at home on a table top or in a 19-inch equipment rack. Its simple controls and easy-to-read display are designed to provide the ultimate in user-friendly operation. Rack-mount kits and front-mount antenna cables are available for professional installation. For applications with up to four receivers in one rack, the APD4 antenna. The HT-300 metal handheld transmitter is made to withstand the rigors of daily use while being comfortable in the hand. The units PL22 dynamic microphone capsule offers the perfect all-around solution for speaking, singing, and emcees. The PL22s cardioid pickup pattern rejects surrounding noise, helping to control feedback while still allowing an experienced vocalist to work the microphone.