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Etymotic Research ER4P MicroPro Noise-Isolating In-Ear Earphones (Discontinued by Manufacturer)

4.0 out of 5 stars 241 customer reviews
| 4 answered questions

Available from these sellers.
  • Highest noise-isolating earphones on the market
  • Reduction of outside noise reduces the risk of listening at unsafe levels
  • Designed for audiophiles, musicians and sound engineers
  • Assortment of ACCU-Fit eartips included to ensure proper seal and comfort and 1/4 inch stereo adapter
1 new from $250.00 2 used from $269.99


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From the manufacturer


Technical details

  • lightweight

Product description

Product Description

The ER-4P MicroPro noise-blocking earphones from Etymotic Research offer realistic sound reproduction and noise isolation that far surpasses that of active noise-canceling earphones.

From the Manufacturer

From the Manufacturer The ER-4P MicroPro noise-blocking earphones from Etymotic Research offer realistic sound reproduction and noise isolation that far surpasses that of active noise-canceling earphones. The ER-4P earphones--which require no batteries--can be plugged into any audio source. They can be used with portable CD, MP3, DVD, and other players without an additional amplifier.

The ER-4P earphones were designed to match the response of the ear, creating nearly perfect sound reproduction. They reduce external sound naturally by sealing your ear canals, without the added weight, bulk, or external power supply required for active noise-canceling. Their external noise exclusion (up to 33 dB using the supplied 3-flange eartips and 41 dB with foam eartips) lets you hear the full dynamic range of recordings without your having to play them at unnaturally high and unsafe levels.



The ER-4P comes with everything needed for audiophiles, performing musicians and recording engineers .

See how the ER-4P measures up in response accuracy.

ER-4P earphones can be used with portable CD, MP3, DVD and other players without requiring an additional amplifier. As compared to the ER-4S, the ER-4P has 10 dB greater output at high frequencies and 13 dB greater output at low frequencies. The higher sensitivity and enhanced bass of the ER-4P have made it the most popular earphone for most uses.

Noise reduction with ER-4 MicroPro earphones occurs naturally from the inserts. Other earphones with active noise-cancelling add circuit noise and require bulky batteries.

In-the-ear, high fidelity transducers combine flat frequency response with isolation from external noise.

The white 3-flange eartips provide 35 dB average external noise isolation. Foam eartips provide 41 dB average external noise isolation. Lowering surrounding noise allows the listener to hear the full dynamic range of recordings at lower reproduction levels.

ER-4 MicroPro earphones are ideal for a variety of consumer uses such as personal CD and DVD players, MP3 players, and computers. Professional uses include mixing and stage monitoring in the studio and during live performance.

What's in the Box
ER-4P MicroPro earphones, a 5-foot cord with 3.5 mm stereo phone plug, a .25-inch stereo phone adapter plug, six 3-flange eartips, 10 foam eartips, a filter-changing tool, 4 replacement filters, a shirt clip, a zippered pouch, a storage box, a user's manual, and warranty information.


Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Reviews

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on February 22, 2015
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on March 26, 2013
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