They are rather expensive to just throw in a pocket, and even if the plastic is robust you can pull the cable out or drop and step on them etc. Come to that, you could even just drop and loose them during a busy commute.
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Team W5000 - Team HEADFIVE - Team Onkyo - FLAC -> Onkyo SE-200PCI -> C.E.C. DA53 -> HEADFIVE -> ATH-W5000
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