WIRELESS SYSTEM: RCEP R41 INTERCHANGEABLE WLESS MICROPHONE, B60 BAG HT7 MICROPHONE BLACK HT7.The HT7 is a professional single-ear condenser microphone designed for stage, presentation and broadcast applications. With a miniaturized element of just 3 mm, the HT7 is the smallest microphone in the Audix line. The omnidirectional HT7 features a comfortable earcup that can be worn around the left or right ear and a durable, adjustable-length boom arm.