ETYMOTIC RESEARCH ER3XR Extended Response In-Ear Earphones (ER3XR)

Achieves highest output sensitivity in its class with 102 dB SPL sensitivity at 1 kHz at 0.1 mVHigh performance, precision matched, balanced armature drivers35 dB - 42 dB noise isolationPrecision...

For music lovers who care about hearing their music the way it is meant to be heard85%+ Accuracy ScoreTight, accurate bass with crystal clear high-frequency detail at all listening levelsDocumented...

Intended for sound engineers and audiophiles in constant motion, comes equipped with extra accessoriesCan be used with portable devices without an additional amplifier or converted to the ER-4S...

Designed to compensate for the high frequency emphasis in all CD recordings, in order to provide accurate sound reproductionHigh accuracy and exceptional sound isolationCan be used with a headphone...

85%+ response accuracy from 20 Hz - 15 kHzAccu-Driver high performance, precision matched, balanced armature driverDocumented highest noise isolation of any earphones or headphones on the market...