This is the third pair of EX71s that have done this to me within 2 months or so of purchase. Even though they sound great, and are superbly comfortable, I’ll never buy another pair of Sony headphones.
Now, I have to decide what to replace them with. I’m spoiled by comfortable isolating earbuds like these, so I’m looking at the Etymotics ER6is and the Shure E2Cs. Decisions, decisions. Would have been a lot easier if I hadn’t forked out for a third pair of these Sony EX71s.