HDTVhookup.com&trade; Stereo RCA To 3.5mm Audio Balun Extender Over Cat5 Audio Connectors: 3.5mm Stereo mini x 1 + RCA x 2 Set of 2 audio baluns - 1 receiver and 1 transmitter Bi-directional so each end can either transmit or receive Max Transmission Distance: 250 feet Plug and play