I’ve now had my DMP-Z1 back, just a little over 6 months & now clocked up my ”third 1.000 hours“ of listening. In the now 3 x 6 months, of my player working, I’ve clocked up something in the region of 3.500 hours ( 18 months. ) Purchased 2 & a half years ago & broken in total for 12 months. I reckon, i would have accumulated 5.500 hours of listening, if i hadn’t had two failures.
On that score, everything going well. Only having used battery, twice, during the last 6 months or so. I have come to the conclusion, or possible conclusion, that i used the battery too much, unplugging too often, for longer or shorter periods.
I’ve never listened to my entire music collection, on any audio device, but I’m presently on my third cycle, of doing so.