Third-Party BizVerify
Global Crown Electronic (HK) Industry Co., Limited
Verified By : SMR(HK)
Verified Date : 2019-04-08

Sennheiser CX 300 II In-ear

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.

  • High passive noise attenuation
  • Modern, bass-driven stereo sound
  • Built-tough with a 2 YEAR warranty!
Learn more about the CX 300-II

The CX 300-II features an asymetrical cable which the longer end goes behind the neck and into the opposite ear. This mimics a single sided cable and reduces the amount of cable in front of the wearer during physical activity. This is a safety and ergonomic feature.


  • 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
  • Convenient carrying pouch included 
  • Asymmetrical cable reduces tangles and cable clutter
  • Built-tough with a 2 Year warranty

Sennheiser CX300 II

Did you know?

The CX 300-II is available in black or silver. 

Sennheiser recommends this headset for...

... those looking to upgrade from standard ear-buds, and those that crave great sound in a compact, portable package.


The CX 300-II is Compatible (listen only) with latest generation of tablets and 1/8" jack smartphones and portable music players.


The CX 300-II is covered by a 2-year global warranty. Sennheisr's worldwide network can quickly and reliably handle any warranty issues.

 Frequency response


 Sound pressure level (SPL)

 Transducer principle

 Cable length

 Jack plug


42-17,000 Hz

 16 ohms

 113 dB (1kHz/1Vrms)


 3.9 ft. (1.2 m)

 1/8 (3.5 mm)

 2 Years

Why Sennheiser ?

For over 60 years every Sennheiser mic or headphone comes with a built-in mission: to stay true to the sound and soul the music was given by its artist. From the fragile intimacy of a whispered word to the deep and dark punch of an attacking bassline. Sennheiser delivers pure emotion and excitement. A quality that has convinced a broad spectrum of artists and of course music lovers all over the world. Sennheiser offers a great experience for everyone who really wants to hear.

What's in the box?

  • CX 300-II ear-canal phones
  • Ear adapter set (S/M/L)
  • Carrying pouch