shop by

Etymotic MicroPro ER-4S Stereo Earphone - ER4S

Customer Reviews   Write a Review

Be the first to review this item and earn 25 Rakuten Super Points™

Product Overview

The ER•4 MicroPro™ earphones are the next best thing to live music, with noise isolation far surpassing that of active noise-canceling earphones. The ER•4s require NO batteries, and can be plugged into any audio source. Their external noise exclusion -- 35 dB with 3-flange eartips, 42 dB with foam eartips -- allows you to hear the full dynamic range of recordings without having to play them at unnaturally high and unsafe levels. The earphones come in three styles: ER•4B, ER•4S, ER•4P.


Manufacturer Etymotic
Mfg Part# ER4S
SKU 10406262
UPC 898234000428
UPC 14 00898234000428
ER•4 MicroPro earphones
5 ft. cord with 3.5 mm stereo phone plug
1/4" stereo phone adapter plug
Six 3-flange eartips
10 foam eartips
Filter changing tool
4 replacement filters
Shirt clip
Pouch (not shown)
Storage box
Tech Specs
Host Interface Mini-phone
Brand Name Etymotic
Manufacturer Part Number ER4S
Product Line MicroPro
Product Name MicroPro ER-4S Stereo Earphone
Manufacturer Website Address
Product Series ER-4
Manufacturer Etymotic Research, Inc
Product Type Earphone
Earpiece Design Earbud
Ear Cushion Foam
Earpiece Technology Dynamic
Earpiece Type Binaural
Earpiece Sensitivity 108 dB SPL
Additional Information Lightweight and portable High accuracy Noise isolation: 20-25 dB Acoustic polarity: +electrical = +acoustic Transducer type: Balanced armature Maximum output: 122 dB SPL Maximum continuous input: 3.0 Vrms External noise exclusion: 35 dB Response Accuracy: 92% Optional Accessories: Airline audio jack adapter Cable to convert "P" to "S"
Package Contents 1 x MicroPro ER-4S Stereo Earphone 1 x 5 ft. cord with 3.5 mm stereo phone plug 1 x 6.35mm stereo phone adapter plug 6 x white 3-flange eartips 10 x foam eartips (medium) 1 x Filter changing tool 4 x replacement filters 1 x Shirt clip 1 x Zippered pouch 1 x Storage box
Weight 1 oz
Form Factor Open
Minimum Frequency Response 20 Hz
Sound Mode Stereo
Operating Distance 60"
Impedance 100 Ohm
Maximum Frequency Response 16 kHz
Connectivity Technology Wired
Parts Warranty/Labor 1 Year
Standard Warranty 1 Year

More Buying Options

Seller Infomation Price & Shipping  
ClassyU $249.95 + free shipping
Condition: Brand New
In Stock

Usually ships in 1 to 2 business days
Add to Cart
Audiolab $299.00 + free shipping
Condition: Brand New
In Stock
Authorized Online Dealer with Top Notch Service Since 1958. Free Shipping on Everything...Everyday.
Usually ships in 1 to 2 business days
Add to Cart
HiDEF Lifestyle Inc. $299.00 + free shipping
Condition: Brand New
In Stock, 45 Day Returns

Usually ships in 1 to 2 business days
Add to Cart
$299.00 + free shipping
Rakuten Super Points Earn 299 ($2.99) Rakuten Super Points™
What are Rakuten Super Points™?
Get rewarded when you shop! Earn 1 point per dollar spent. That's like getting cash back on every purchase. Easy to see matured points in checkout. Use points just like cash.
Learn More
Get this item for
(price with shipping)
(redeem points)
Condition: Brand New
In Stock. Usually Ships in 1 to 2 business days
Please select an option to buy
  • $37.99
  • $69.99
Add to Cart

What is a Marketplace and Shop Owner?
  • Our marketplace is a platform where approved third-party retailers (Shop Owners) can sell their products
  • Items are sold and shipped by Shop Owners
  • Your credit card and personal information remain secure; meets all PCI Security Standards.
  • Purchases can only be returned to the Shop Owner
  • All purchases receive Rakuten Super Points™