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Sennheiser CX 300S review

£39.00 Typical price

Test scoreShow Context

Key features
  • In-ear
  • Wired
Expert review

The Sennheiser CX 300S in-ear headphones support both Siri and Google Assistant voice control. They're lightweight, have in-line controls, and Sennheiser claims they offer 'amazingly detailed sound reproduction and enhanced bass response'. But did our expert listening panel agree? We sent these headphones to the Which? test lab to find out. Read our full review for the verdict.

What's included:
  • Pros and cons
  • What are they?
  • How do they sound?
  • What are they like to live with?
  • Is there anything I should watch out for?
  • Is there anything else I should know?
  • Should I buy them?
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First reviewed by Which?

October 2019

Released

February 2019

Test results

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

Find out how we test headphones>
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Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

Best Buys and Don't Buys
We have tested 265 headphones and found that there are 46 Don't Buys and 34 Best Buys.
Range of Headphone scores
  1. 10%
    Lowest score
  2. 55%
    Average score
  3. 91%
    Highest score
We'll show you where this model sits on the scale so that you can see how it compares to headphones we've tested
Sign up to unlock Best Buys and Don't Buys
Full Access first month £5, then £9.99 per month, cancel at any time

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

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