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Sony MDR-XB21EX (MDRXB21EX) Extra Bass Earbuds

Specially Designed to Reproduce Powerful Bass with 9mm Dynamic Neodymium Drivers

  • 4.0

(1 review)

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Price Information

$39.99

–$5.04

$34.95

In Stock

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Customer Testimonial

Thank you Tiffany B. for your quick responses and excellent service.

- Hillary from Gallatin, TN

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Defy Limitation

Especially designed to provide a captivating bass response, the MDR-XB21EX is a compact set of earbuds that is distinguished by an ability to plumb the lowest reaches the frequency scale. Powered by 9mm neodymium drivers kept in housing acoustically engineered to provide the most resonant bass, the MDR-XB21EX is uncharacteristically dynamic in its price range.

General Features:

  • Wired Stereo Headphones with Powerful Bass Reproduction
  • In-ear design with hybrid silicone earbuds
  • Compact and potent 9mm speaker driver produces amazingly clear sound particularly in lower frequencies
  • Flat cable prevents tangles
  • Various earbud sizes ensure a comfortable and secure fit
  • Compact and lightweight construction for maximum portability
  • Gold-plated and right angle corrosion-resistant stereo jack
  • Prime addition for travel or active lifestyle
  • Includes different size tips for added comfort
  • 1-year Manufacturer's Warranty
  • In the Box
    • Operating Instructions
    • One Clip
    • Hybrid Silicone Earbuds: SS(2), S(2), M(2), L(2)
    • One Carrying Case

Product Specifications:

  • Frequency Response: 5-23,000 Hz
  • Sensitivity: 103dB
  • Nominal Impedance: 16 Ohms
  • Cord Length: 47-1/4in
  • Cable Type: Flat
  • Plug Size: 1/8"(3.5mm)
  • Plug Construction: gold-plated
  • Magnet Material: Neodymium
  • Speaker Diameter: 9mm
For an even lower bass response try the MDR-XB41EX earbuds of the same series
Headphone Design
Headphone Type Earbuds
Earpiece Design In-Ear
Specifically For Home/Portable
Lifestyle Music Lover
Student
Traveler
General Features
Noise-Canceling No
Headphone Connection Corded
1/4" Stereo Jack Adapter No
Volume Adjustment No
In-Line Microphone No
Ear Cushions Yes
Frequency Response 5 - 23000 Hz
Sensitivity 103 dB
Driver Size 9 mm
Driver Type Dynamic
Impedance 16 ohms
Primary Color Black
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Manufacturer
Customer Review Summary for Sony MDR-XB21EX (MDRXB21EX) Extra Bass Earbuds
Average Customer Rating is 4.0 out of 5 stars:
  • 4.0
based on 1 Review
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Rating Distribution:
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3 star:
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Average Attributes Rating:
Durability
  • 4.0
 4.0
Value
  • 4.0
 4.0
Features
  • 3.0
 3.0
Design
  • 5.0
 5.0
Usability
  • 5.0
 5.0
what's this?
Most Helpful Customer Reviews:
September 22, 2012 Live up to their name
Review by
Dylan from Plover, WI
Overall
  • 4.0
Durability
  • 4.0
Value
  • 4.0
Features
  • 3.0
Design
  • 5.0
Usability
  • 5.0
I'm not sure if Sonic will restock these, but if they do, these are a good pair of earbuds. I foolishly bought mine off of Amazon for about 40 bucks, but once i used them for a while, the bass really gets down. It is not overwhelming and if you tune your digital equalizer (itunes, ipod, whatever you use) to lower the highs a little and boost the bass, you can listen to anything from metal to dubstep. Very comfortable and blocks out lots of background noise, i often cannot hear much when on a crowded school bus let alone a couple of people in a room.
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Product Summary

Manufacturer: Sony
Model number: MDR-XB21EX
UPC: 027242814042
Weight: 0.21 lbs
Internal SKU: mdrxb21ex
Internal product ID: 44265