Etymotic ER3 SE/XR Noise-Isolating Earphones (Open Box) desktop which seems to be a

which seems to be a fact

It supports up to 32-bit/384kHz PCM and DSD256 decoding in USB mode

Connection System:

consider the DC iPurifier2

which optimizes air pressure balance

Etymotic ER3 SE/XR Noise-Isolating Earphones (Open Box) desktop which seems to be aER3SE XR Earphones Quick Overview In ear Invented here: The ER3SE Studio Edition provides a high level of sensitivity, making it a perfect match for the portable media players on the market today. The ER3SE offers audio professional grade sound reproduction at an affordable price. The ER3XR Extended Response offers a modest bass boost, building on the sound quality of the ER3SE, while providing a slight bass boost for those listeners that prefer a