trairden's Full Review: Etymotic Research MicroProâ„¢ ER-4P Consumer Headp...
I've got two sets of Sony noise-canceling headphones (one set in-ear and one over) and some pretty decent "living room" earphones, and these put them all to shame. The detail and fidelity are by far the best I've heard. Total in-use package including pouch is less than an ounce, which makes them really ideal for travel.
I paid $233 for mine, and have subsequently found them on eBay for $200 (Buy it now) shipped ground.
Co. site for this product is
http://www.etymotic.com/ephp/er4.asp
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