Sony MDR-XB21EX Specification Guide
Bringing out the best of your beats with enhanced bass performance, the XB-Series
earbuds deliver crisp sounds and deep feeling bass. The vertical in-the-ear design
houses a high-sensitivity driver, while soft hybrid silicone earbuds provide a comfortable
fit. The result is outstanding audio quality and long-term comfort.
Powerful Bass
Specially designed, powerful drivers housed in a tightly sealed acoustic design result
in ultimate bass reproduction.
Snug Fit
In-the-ear style combined with 4 hybrid silicone earbuds sizes translates to a proper
fit and long-term wearing comfort.
Flat cord
The durable, 1.2m flat cord has a smooth finish and reduces tangles, so you can get
caught up in your music, not your cord.
Specifications
©2011 Sony Electronics Inc. All rights reserved. Sony and the Sony logo are trademarks of Sony. All other
trademarks are property of their respective owners. Features and specifications are subject to change
trademarks are property of their respective owners. Features and specifications are subject to change
without notice. /Updated: August 4, 2011
Audio
Driver Unit
9 mm driver, dome type
Frequency Response
5 to 23,000Hz
Impedance
16 ohms at 1kHz
Sensitivity (db)
103 dB/mW
Audio Features
Ear Cups
Closed, Dynamic
General
Design
In-Ear, Portable-music/movie/games
Magnet
Neodymium
Plug
Gold-plated L-shaped stereo mini
Type of Use
Portable
Power
Power Handling Capacity
100 mW
Weights and Measurements
Cord Length (Approx.)
47-1/4 in. (1.2 m). flat cord, Y-type
Weight (Approx.)
.14 oz. (4 g)
Accessories
Supplied Accessories
Operating Instructions (1)
Hybrid Silicone Earbuds (SSx2, Sx2, Mx2, Lx2)
Carrying Case (1)
Clip (1)
Optional Accessories
EP-EX10A replacement buds (SS,S,M,L)
MDR-XB21EX