Headworn mic for vocals with mini XLR connector for use with B29 L battery operated power supply, MPA V L external phantom power adapter, or AKG WMS bodypack transmitters. From The Manufacturer: The C520 professional head-worn condenser microphone with maximum dynamic range for perfect vocal sound. An ideal choice for frontmen, singing keyboardists, drummers, guitarists and dancing performers needing a hands-free microphone. The moisture shield prevents perspiration from penetrating into the transducer element, ensuring a high degree of humidity protection for the microphone. The C520 provides a transducer shock mount to reduce body noise to a minimum. Its cardioid polar pattern effectively rejects unwanted ambient noise. The microphone arm mounts on either the left or the right side of the headband. Features: Lightweight & Adjustable headband construction Left & Right Flexible Boom mounting Condenser Capsule on Flexible Mount Moisture Shield Professional mini XLR Connector Specification: Audio frequency bandwidth 60 - 20000 Hz Equivalent noise level 31 dB-A Sensitivity 5 mV/Pa Signal to Noise 63 dB-A Electrical impedance 200 Ohms Recommended load impedance 2000 Ohms Polar Pattern Cardioid Length 195 mm Height 195 mm Net Weight 26 g Cable length 1.5 m (5 ft.) Finish matte black Audio Output Mini XLR (Female) Contacts 3-pin Powering Interface 9 to 52 V 2 mA