I had D2, I7, Plenue D and they were all great and good quality then I bought U7 from Cowon Ebay store and as always it sounds great, but after 6 months the part of the jack (where you plug your headphones) is defective. It only plays from one side until I move the plug then it's fine and both ears work but as soon as you move it only comes out of one ear and/or is static. but the return date has already passed, so I have a single-channel mp3 player. and if it worked well i would give 5 stars. I've also tried a couple of headphones and earphones and the same result with U7, but it works fine with my other MP3 players.
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