The PLI04 Media DI Box from Palmer is designed to convert your personal computer or laptop's unbalanced outputs into balanced signals. This will assist you with presentations, meetings, or public engagements by allowing your computer or laptop to connect to a PA system and other necessary sound equipment. The Media DI Box accommodates most common input types, including TRS jacks with mono or stereo plugs, RCA phono sockets, and a 3.5mm stereo jack for use with the headphone output of a laptop or similar device. There are conventional transformer-balanced XLR output sockets which provide an electrically decoupling signal for noise-free operation. The media box can also be switched to mono mode, with the two stereo signals summed and fed to both the XLR outputs.