logitech x540 5.1 speakers .

selling my used x540 due upgrade for z5500.comes with all cables but no box.almost no usage marks. Frequency Directed Dual Driver (FDD2) technology produces a uniform soundfield anywhere in the room Create 5.1 surround sound from common 2-channel stereo sources with Matrix mode Satellite speaker stands rotate for easy wall mounting Dynamic, real-time bass equalisation maximizes bass response while minimizing distortion High excursion, ported, down-firing subwoofer displaces more air for deeper bass Master volume, subwoofer level and matrix button are all conveniently placed on the control centre Connect headphones to enjoy your games and music privately also i have a asus xonar dg soundcard perfect for these speakers to enjoy 5.1 sound