Etymotic ER-4
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Reviews
Etymotic ER-4P
DigitalTrends - 03-2004Higher sensitivity for use with portable devices 9dB more output with a 1mV input than the ER-4S...
Etymotic Research ER.4 microPro Headphones
Trusted Reviews - 09-2006
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User opinions
Etymotic Research ER 4 - 10 / 10
Dooyoo - 06-2004
Etymotic Research ER 4 - 10 / 10
Dooyoo - 09-2000
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News
Review: a week with the Etymotic ER-4 microPro
Gadgets9.com - 08/24/2009We've reached the point where I can dwell on positives: the last three headphones in the...
Etymotic ER-4 microPro Sound Isolating Earphones
TheTechLounge - 11/10/2008The ER-4Ps are excellent at reproducing accurate sound from a recording. If you are listening to...


















