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Etymotic Research MicroPro ER4P Portable Earphone image
(based on 1 ratings)
Brand: Etymotic Research
Located in: Wired Headphones

The ER4P MicroPro earphones are the next best thing to live music, with noise isolation far surpassing that of active noise-canceling earphones.

Main Features

  • Manufacturer: Etymotic Research, Inc
  • Manufacturer Part Number: ER4P
  • Manufacturer Website Address:
  • Product Type: Earphone
  • Connectivity Technology: Cable 5 ft
  • Earpiece Technology: Dynamic
  • Design Type: Ear-bud Binaural
  • Interfaces: 1 x 3.5mm Mini-phone Stereo
  • Weight: < 1 oz
  • Standard Warranty: 90 Day(s)
  • Review Snapshot®
    Avg. Customer Rating:
    4 stars
    (based on 1 review)
    Delivers the quality that was promised
    By Hart ManVerified Purchaser from Houston, TX on 3/22/2009
    Comfortable, Compact, Cord Clip Works Well, Durable, Lightweight, Noise isolation, Rich Sound
    Best Uses:
    Music, Portable Devices, Travel
    Describe Yourself:
    Audiophile, Frequent Traveler
    Primary use:
    Bottom Line:
    Yes, I would recommend this to a friend

    Comments about Etymotic Research Etymotic Research MicroPro ER4P Portable Earphone:

    I travel to Europe frequently and use the ear buds on the plane as noise isolation as well as with the airline sound system. Previously used other products with fair to poor results. A whole new world of sound and sound isolation comfort was opened up with the Micropro ER-4P buds. I use the rail and subway systems in Europe and plugged into my I-pod the comfort and use of this product far surpasses the others I have tried. The cord clip onto a shirt to prevent the normal pull of the cords onto the ears works wonders to help keep the plugs in the ears and the strain of the plugs being pulled out of the ears and the discomfort caused with long period use. The immediate notice of lack of deep bass was a immediate concern quickly overcome by the superior sound quality provided. Other products mask their lack of sound quality with a booming bass that translates into having to turn the volume up to hear the mid range and highs. These ear buds allow a lower volume as the outside noise is isolated, and the midrange and high end productions are crystal clear with a sufficient bass to provide a more realistic sound reproduction. The only drawback noticed so far is the fact the buds stick out enough when attempting to sleep on your side, the buds protrude enough to cause discomfort. The other issue I have read about is the cord noise when clothing rubs against the cords, but the cord clip properly placed can reduce this issue to a very small amount of time even in winter clothes and coats. Overall a superior product that I am very pleased to have.

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