This is an IEM that sounds about as good, or in some cases better, than the better IEM's that I've owned, from the RHA T20i to the Sennheiser IE800 to the Final Audio FI-BA-SS. The fact that it's Bluetooth (Qualcomm aptX) is quite a plus, although for absolute fidelity of high resolution tracks, the aptX Bluetooth rules apply.

http://www.hifiheadphones.co.uk/comm...e-review.4444/