Etymotic ER2 SE/XR Noise-Isolating Earphones (Open Box) Model:ER2XR Extended Response transporting you to the heart

transporting you to the heart of your favorite recordings and nowhere else

The subbass of the Oracle is powered by a new 10mm polycarbonate dynamic driver to produce a deeper and more impactful low-frequency sound distribution

In the past

Wired Connectivity: 3

fuse holders and low-grade wiring/bus-bars which are all points of weakness

Etymotic ER2 SE/XR Noise-Isolating Earphones (Open Box) Model:ER2XR Extended Response transporting you to the heartWhich ER2 is right for you? Both ER2 models, the ER2SE and ER2XR, use the same low impedance dynamic drivers. That means they are easy to drive, and no amplifier is required. The only difference between the 2 models is the tuning of the lower (bass) frequencies. The Studio Edition ER2SE is tuned to have a flat frequency response. The eXtended Response ER2XR is tuned to have an emphasized bass, adding 1 2dB to the mid bass and 3 4dB to the sub bass.