- Oct 7, 2005
HM650 has exactly the same or similar firmware as the 802/901/802u/901u/802s/901s. If you can't live with one of them, you won't like the others. Actually without the wheel, HM650 might have less problem than the 802/901.
I have both HM650 and 901s now, I like both.
I coudn't care less about it has the same or simillar firmware. I don't have 901 and just 901 IEM card. The thing is, the firmware on 650 get crashed several times whilst playing several of my flac files and get rebooted.
Not to touted about battery drain..
I have 603 before and although it is simple, it does work without hiccup. Oh.. and it used standard charger by the way.