Quad Uhf Microphone System with 4 Lavalier Microphones U-41 Quad 4 Channel UHF Receiver Four discrete UHF wireless receivers in a single rugged 19" 1U, all-metal rack mount housing Back panel Balanced XLR mic level output, Unbalanced 1/4" jack line level sum output with separate volumes, and external adjustable mute control for each channel Front panel LED display indicates TX on and AF levels bar graph for each channel and dual removable antennas Nady's exclusive patented companding circuitry and highest quality audio for an The U-41 Four-Channel Wireless Lavalier Microphone System was designed for all professional applications This amazingly affordable wireless system offers unsurpassed high end RF and audio, enhanced full-featured operation and rackmount convenience The U-41 Four-Channel Wireless Lavalier Microphone System includes the U-41 Quad 4 Channel UHF Receiver and the UB-4 Bodypack Transmitter The U-41 Four-Channel Wireless Lavalier Microphone System was designed for all professional applications