The Sennheiser Cable-II-6 is a straight copper cable with a coiled segment that eliminates structure born noise. The unterminated end has six wires. Four wires for audio connection and 2 screened wires for the microphone signal.
Inner cable design with 4 wires for audio and 2 screened wires for microphone signal
CONSUMER ALERT FOR WIRELESS MICROPHONE SYSTEMS
Most users do not need a license to operate a wireless microphone system. Nevertheless, operating a microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone website at
www.fcc.gov/cgb/wirelessmicrophones