With a new design and detachable cable the HS3 is a great choice for an economical headset. The HS3 s super lightweight design makes wearing the microphone more comfortable even for long periods of time without using excessive pressure to hold the microphone in place. The soft microphone stem allows for easy adjustment of the microphone s position as you wear the headset. These headset microphone works great with many wireless transmitters available. The HS3 can be wired to work with transmitters made by Galaxy Audio Shure Sennheiser AKG and Audio Technica as well as most other brands of wireless microphone systems. You can also use the HS3 microphone with most PC sound cards (adaptor not included).Our JIB/PB may be used if a wireless transmitter is not available or needed. The JIB/PB will supply phantom power (if needed) to the headset and adapt the mini connector on the headset to a standard XLR connector so it can be attached to a soundboard. * This unit uses the AKG/Galaxy (TA3F) Connector Plug * Impedance: 2200 ohms * Sensitivity: -40dB re. 1V/Pa * Frequency Response: 20Hz-20KHz * Max SPL: 110dB * Element: Diameter 4mm * Polar Pattern: Omni * Element Type: Back Electret Condenser * Color: Beige