X-Light 4 is a small module that operates as a sound generator in combination with Windows PCs, Apple Mac computers and iPad/iPhone.X-Light 4 is able to play any music file, MIDI or MP3 and Wave audio files. It’s the perfect companion to the live musician who wants to have a competitive edge with respect to internal sound cards for computers.If you love to play MIDI files with computer softwares such as Grinta Karaoke, Winlive, Van Basco or others, X-Light 4 is the module that suits you best; that’s because of the sound library developed by M-Live which is especially calibrated to Standard MIDI files. These sounds come from the experience gained with products such as MERISH and Expander.X-Light 4 is a very easy to use Plug & Play module: just plug the USB cable to your PC and you’re done. No need for external power supply*, and you can connect it to your professional audio system or amplified speaker set at home.*When used with iPad or iPhone, you must connect the power supply.