The Azden 2000URX UHF True Diversity Camera Mountable Wireless Receiver is the result of an entirely redesigned PLL synthesized circuit that dramatically improves wireless audio quality and minimizes noise. The 2000URX is camera mountable, operates on 4 AA batteries (or external 11-15V) and delivers stable wireless microphone operation with the 2000BT bodypack transmitter (sold separately). Its True Space Diversity reception minimizes noise and artifacts due to RF interface while increasing range. There are balanced XLR main and stereo 1/8" (3.5mm) mini headphone outputs. Select up to 181 frequencies over the 638.125 - 661.875MHz range for maximum flexibility.