LINESO 3.5mm Stereo To RCA Red White Audio Balun Extender Over Cat5 LINESO 3.5mm Stereo To RCA Red White Audio Balun Extender Over Cat5/Cat6 .Set of 2 audio baluns - 1 receiver and 1 transmitter Maximum distance of 240 ft cat5/6 cable length Bi-directional so each end can either transmit or receive Installation - It is simple. Just plug in the cable to each adapter. Plug them into your devices and then - That's it your done. Audio Connectors: 3.5 mm Stereo mini x 1 + RCA x 2;These are lifesavers in getting your new PA system up and running.