Professional 8 Channels Wireless Conference Gooseneck Microphone System More than 4 units (32 gooseneck mic) can work at the same time. Perfect for professional use at any events: conference, meeting, etc... BL8800 UHF Eight Channel Wireless System provides you with proven performance and durability in a variety of settings, from churches to nightclubs to gymnasiums, from concert halls to broadcast booths and stadiums. Each BL-8800 Series UHF wireless microphone system includes one receiver and eight desktop gooseneck microphones/transmitters, each of which has 100 selectable channels so it's much easier to avoid any unpleasant interference from other sources and for easy system expansion as well. This system has a total of 9 outputs, one of which is a mixed standard 1/4" outputs, the other 8 are individual balanced XLR outputs. Features Backlit LCD display showing RF level, AF level, Channel Frequency. 8X100 Selectable frequencies on each channel, up to 20 units can be used simultaneously Automatic transmitter setup, the channel of the transmitter and receiver can easily synchronize Eight channel receiver, Both microphones can be used at the same time Eight XLR individual outputs and one 1/4" Mixed output Individual volume control on each channel Frequency Response: 45Hz~18KHz Battery Life: 12 Hours ( AA batteries ) Range: Up to 300 feet ( 80 meters ) Rack mountable, Fits 19" rack Package includes: (1) 8 channel UHF receiver (4) 8 metal gooseneck microphones (1) 1/4" audio cable (1) AC-DC adapter (1) Manual