Heil Sound Pro Set Elite-6 Headset ultimate boomset designed for commercial sportscasters, podcasters and amateur radio operators using the newly designed Heil HC 6 wide response microphone element. Pro Set Elite - 6 contains the Heil HC 6 full range dynamic broadcast element. The HC-6 is designed for commercial broadcast applications; the -3dB points are fixed at 100 Hz and 12.5 kHz, with sensitivity of -57 dB at 600 Ohms output impedance (centered at 1kHz). Using new dynamic technology, the HC 6 response can be equalized to match just about any requirement, from full range commercial broadcasting to serious contest and DXing.