I had my E-4c since late 2005 when there its was THE earphones back then. Over the years they held up abuse fine except the cable relief cracked from dry roting but music still flows just fine. I can use them in the gym for general workout but not for running, the ear pieces will fall out very easily They are very detailed with good dynamic. The sound signature is little on the cold side. I did not notice the vocal has "plastic" sound to them until I compare them to Westone, HD650, and LCD-2. They are not worth the money by today's standard, there are so many better choices now day for lower price. I gave away mine to a friend this last since they were just laying in my draw, and never missed them after that.