because I had to after years of use my Sennheiser CX300 adopt because of a cable break of these replacement was needed :) many tests read by zich Ear-phones and somehow I came through a review of the NOCS NS400. But they were unfortunately not available for Android, so once bought blindly the NS500! What can I say, world of difference betw my old Sennheiser CX300 ... ok which cost only 30 but the sound was very good. The sound of the NOCS NS500 is SUPER ... sau clear beautiful soft deep bass .... well basically perfect (but everyone hears differently :)) The business phase of 5-10std they have behind them (let it run overnight on a laptop: P) makes listening to music a lot of fun with the parts. Furthermore, I find the ribbon cable awesome because can tie anything here !! Are always ready for use when taken out of their little bag! In addition, a good deal is the cable, compared to my Sennheiser, longer, which is very advantageous. Structure-borne sound transmission through the cable I can not find. When cycling there is no annoying wind noise!