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CX 300s White


Inclusive of all taxes
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Boost your sound with Sennheiser’s cx 300s earphones which offer amazingly detailed sound reproduction and enhanced bass response thanks to Sennheisers transducer technology. The in-ear design reduces ambient noise to a minimum and the included set of ear-adapters guarantees an individualized fit with four sizes (xs, s, m, l) to choose from. A smart remote enables you to pause music and take calls across all devices. This product is the successor of the CX 300 with a remote.


  • Built-in microphone and remote for call and music control.
  • Ergonomic In-Ear design for ambient noise isolation and undisturbed listening.
  • Tough and tangle-free cable for long-lasting listening enjoyment.

Technical Data


18 Ω

Frequency response (Microphone)

100 – 10,000 Hz (-10 dB)

Frequency response

17–21,000 Hz (-10 dB)

Sound pressure level (SPL)

118 dB

THD, total harmonic distortion

<0.5 % (1 kHz, 100 dB SPL) 

Ear coupling


Jack plug

3.5 mm angled

Cable length

1.2 m

Transducer principle


Earpad size



12 g

Pick-up pattern

Omni directional



Microphone sensitivity



118 dB SPL @ 1 kHz, 1V RMS

What's in the box?

  • CX 300S earphones
  • Ear adapter set
  • (XS/S/M/L)
  • Storage pouch

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