Pyle Pro PDWM2600 Dual UHF Wireless Microphone System: * Professional dual UHF * Power on/standby/off switch * Audio mute circuitry for quiet operation * Advanced compounding circuitry * Dual RF indicators * Dual AF level meters * Dual volume controls * Individual XLR balanced outputs * 0.25" mixed unbalanced output * 110V/220V selectable * Half space rack mountable * Includes rack ears, batteries, 0.25" audio cables and 2 microphones * operation range: 150" * Frequency range: 710MHz - 850MHz Consumer Alert: Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this 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.