Galaxy Audio AS-TXRM Stand-Alone Wireless Audio Link Transmitter for Traveler 8 & 10The Audio Link Transmitter will transmit audio signal to any of our Traveler Series Speakers. It is designed to take a mixed signal and send it to the speakers wirelessly. The AS TXRM can also act as the mixer; its easy with a XLR, 1 4", and RCA inputs between two channels, each having their own volume control. So a microphone, CD player, iPod, etc can be inserted and transmitted to your speakers. The AS TXRM can be rack mounted or placed on a table