The field-replaceable cushioned ear pads also come with removable cotton covers that can be easily removed for washing. The 6' coiled cable terminates in a 1/8" mono plug for the microphone, and a stereo 1/8" plug for headphone speaker connection. A 1/8" to 1/4" adapter is also supplied. The PRO SET ELITE works with all Heil AD-1 adapter cables, which mate with just about every type of amateur radio transceiver.
There are two different models:
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.
Pro Set Elite - iC contains the specially designed high performance electret condenser which was designed for low level mic inputs used in many iCOM amateur radio transceivers. The -3dB points are fixed at 80 Hz and 12.5 kHz. The iC element requires + 5 Volts DC phantom power, which all iCOM rigs provide.

