Clay.AdI have the Hidizs AP60 II, which looks almost the same except for the colour and probably the DAC chip. Mine works very well but sometimes have issues with BT connection. I would power it off then on again to do another pairing. When you use wired headphones, you ought to turn off the BT. The wired version made my Motorola Pulse Escape+ sound like a full symphony orchestra playing in my brain! Tried it with my other headphones, Urbanears Plattan ADV, Plattan 2 both wired and they don't sound as good as the Motorola ones. BT connection on Sony MDR550BT is also not as good as listening to it with wires. Playtime on BT only gives you about 4 - 5hours on the unit but wired, you get about 10hrs, enough to last a long flight.