Product Comparison: Sennheiser CX 300 II vs Sony MDRXB50AP

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General Specifications
CX 300 II
About the Product
Offering a powerful, bass-driven stereo sound with greater clarity and improved dynamics over standard earbuds are the CX 300-II ear-canal phones. The various sizes of ear adapters (S/M/L sizes) provided in the package allow for a customized fit as well as exceptional noise blocking capability.
Specially designed drivers with high-energy neodymium magnets deliver deep, powerful bass that perfectly complements today's popular music genres.
Size & Weight
7.9 in.
2.5 in.
3.9 in.
1.5 in.
7.9 in.
6.8 in.
3.52 oz.
2.4 oz.
What customers say about "Size & Weight"
Sennheiser CX 300 II Precision Enhanced Bass Earbuds
  • The earbuds come with three different size rubber inserts.
  • Sound quality is pretty good considering the price and small size, but not amazing.
  • The earbuds seal out any and all outside noise and fit comfortably in my ears.
  • So, the first thing I have to say is, this are comfortable in bed and my ears do not hurt. Other earphones get uncomfortable, but these are very comfortable.
  • I find that they are very well rounded, and very comfortable.
Sony MDRXB50AP Extra Bass Earbud Headset
  • I really like these. They are very comfortable and the sound is clear.
  • I purchased these earbuds for my 13 year old son. He has gone through several earbuds and he says these are the most comfortable he has ever used.
  • I like the way these buds sound and feel. Very comfortable. Good product for the price.
  • Great fit, good sound quality, and very comfortable to use.
  • Comforts to wear. Sticks to the ear very well.
Headphone Fit
Cord Length
3.93 feet
3.93 feet
Built-In Microphone
Sound Isolating
Water Resistant
High-quality dynamic speaker systems for bass-driven stereo sound and durability, Personalized fit in the ear canals functions as an earplug and high-quality speaker, Customizable ear adapter system achieves the perfect fit, Asymmetrical cable reduces tangles and cable clutter
Powerful Sound, Bass Duct Design, Smartphone Playback Control, Comfortable Fit
Volume, Play/Pause, Start/End call
What customers say about "Features"
Sennheiser CX 300 II Precision Enhanced Bass Earbuds
  • The swagger of these headphones comes out in the areas where they truly excel, in the aforementioned sound quality and noise isolation.
  • The sound isolation is so good I could barely hear my buddies sound system in his car.
  • For the money, the sound quality is unbelievable. Sharp highs, clear mids, and deep, booming bass that I've rarely found in any earbuds at any price level.
  • The cord feels a little cheap.
  • The right-hand cord is longer so you can wear it at the gym (but not biking, because that's unsafe), with the cord going around the back of your neck to get to your music device while you work out.
  • These earbuds would benefit from better construction and the addition of a microphone (or at least a controller).
Sony MDRXB50AP Extra Bass Earbud Headset
  • Good cord length, just the right sound for me.
  • Long enough cord as well so you have ample cord to move your devices around while workout.
  • There is volume control on the microphone.
  • An integrated microphone is handy and clear for hands free chat.
  • Great sound isolation, beautiful design and really resilient product!
  • The microphone could be a little better. Sound quality is great however.
Warranty / Certifications
Manufacturer Warranty
2 year(s)
0.25 year(s)

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