Audix AP41 HT7 Wireless Headworn Microphone System | Frequency: A (522-554 MHz), Color: BeigeHeadset is available in black and beige. The Audix AP41 HT7 Wireless Headworn Microphone System features the HT7 single ear miniaturized head worn condenser microphone. The HT7 is a professional single ear head worn condenser microphone designed for stage, presentation, and broadcast applications. With a miniaturized element of only 3mm, the HT7 is the smallest microphone in the Audix lineup. The omnidirectional HT7 features a comfortable earpiece