Etymotic ER2 SE/XR Noise-Isolating Earphones cable not detachable 5mm plug and a threaded

5mm plug and a threaded 1/4" adapter for wide compatibility with a variety of devices

Type Dynamic Driver Diameter 15

Documented highest noise isolation of any earphones or headphones on the market today

This new design places all parameters of the fully analogue system under digital control for a ‘best of both worlds scenario’

The tailored frequency response is ideal for lead vocals

Etymotic ER2 SE/XR Noise-Isolating Earphones cable not detachable 5mm plug and a threadedWhich 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.