2 years international warranty
30 days free return
CX 300S
CX 300S
CX 300S

CX 300S

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Article number: 508593

Product Description

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.

Impedance 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 Ear-canal
Jack plug 3.5 mm angled
Cable length 1.2 m
Transducer principle Dynamic
Weight 12 g
Earpad size XS;S;M;L
Pick-up pattern Omni directional
Microphone sensitivity - 44dBV/Pa
Acoustics Closed
Sensitivity 118 dB SPL @ 1 kHz, 1V RMS
Ear pad material Silicon rubber

Key Features

  • 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.

What's in the Box

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

Customer Reviews

Based on 52 reviews
Good headspace and clarity

Does not overpower the bass, which is a great plus considering the price range and competition. Good headspace and clarity, which positions the instruments/sounds/vocals/and so on within a dynamic and clear range. The space is limited, because of the in ear function, which is unavoidable. Would recommend, while for more space would recommend other product range of over ear headphones.

Best Value Buds with Mic

I've been buying Sennheiser buds for quite some time. Needed ones with a mic so opted for these as a budget option and can't complain. Sound quality, fit and build are decent for the cost.

Good sound, low price

Great product.


Buon prodotto sono soddisfatto

Nothing special, consider a return

Not excited. Considering a return. Sound not much, ear pieces tend to fall out. Really expected a little more from Sennheiser.