Sennheiser CX 300S In-Ear Headphones - Black

Sennheiser CX 300S In-Ear Headphones - Black
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Experience detailed sound and impressive bass using the Sennheiser CX 300S In-Ear Headphones. Featuring an in-ear design, this pair of headphones effectively lessen ambient noise so you can enjoy immersive listening. It also comes with Smart Remote and microphone, enabling you to manage your music as well as take calls.

Key Features

  • The Sennheiser CX 300S Headphones is built with a small design that fits readily in bags and can be used anywhere.
  • Constructed with microphone and remote, the CX 300S Headphones enable you to instantly answer calls, adjust the volume, and pause the music.
  • This pair of Sennheiser Headphones are built with ergonomic in-ear design, allowing you to minimise the ambient noise around you and listen to music without disturbances.
  • To ensure a comfortable fit, the CX 300S In-Ear Headphones come with an ear adapter set that lets you choose between four sizes: extra-small, small, medium, and large.
  • Providing absolute convenience during your listening session, the pair of Sennheiser CX 300S In-Ear Headphones is equipped with silicone rubber earpad and durable tangle-free cable.
All Product Details
Brand Sennheiser
Product Type Earphones
Headphones & Portable Speakers
Noise Cancelling Field Noise Isolating
On-Ear Controls In line remote and mic
Wired / Wireless Wired
Waterproof / Sweatproof No
Connectivity Wired
Frequency Response 17-21,000 Hz (-10 dB)
Connection Type Wired
Connections 3.5mm headphone jack, angled
Manufacturers 24 Months
Sennheiser CX 300S In-Ear Headphones - Black is rated 4.3 out of 5 by 7.
Rated 3 out of 5 by from Clear sound and comfortable Being a German product i thought they would be great.. but they are already starting to crackle at the base of the headphone jack. Also the bass in them isnt great either and if youre looking for noise cancelling headphones, these aint it. But the sound is clear and they are super comfortable.
Date published: 2020-02-21
Rated 4 out of 5 by from Not Shabby Not Flash Just Right The in ear design surprisingly reduces a lot of the outside noise than the last pair I purchased, also I have used the built in microphone for calls and it's very clear, and I really like the long cord which seems to not get tangled somehow. I use it when on public transport.
Date published: 2021-03-29
Rated 4 out of 5 by from Nice upgrade Good quality earphones if you're upgrading from cheaper ones. Sound quality for music is great, although its sometimes tinny.
Date published: 2020-09-03
Rated 5 out of 5 by from Replacement headphones Brought for my daughter, primary use is communication over apps, I am told they work well.
Date published: 2020-05-23
Rated 5 out of 5 by from Excellent earbuds Excellent sound and base quality. Very comfortable!
Date published: 2020-05-25
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We aim to dispatch orders within 2 days. Delivery costs are calculated based on your location and the size of your order. Furniture may take up to 8 weeks to deliver as most products are made specifically for your order. Some goods may take longer to deliver if a product is currently not in stock. A staff member will contact you where this occurs.

Easy returns

If you feel your product has failed a Consumer Guarantee (as defined by New Zealand Consumer Law) then don't worry you can easily return it to your local Harvey Norman store. We'll even pay for the postage if you live in an area where there is no store. Our returns policy covers any purchased item ( conditions apply).

What's in the box
  • CX 300S earphones
  • Ear adaptor set (XS/S/M/L)
  • Storage pouch
Questions & Answers
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Product Care

Protect your purchase with Product Care®. Get a brand new replacement if your product suffers an eligible fault through our hassle free support process, plus enjoy a range of exclusive benefits like a product health check and free prints each year so you experience your new product even more.

Discover all of the benefits Product Care® brings you:


With Product Care® you can relax knowing your purchase is protected. After an assessment, if your product suffers a fault covered by the terms of your plan, we’ll arrange to have a brand new replacement delivered to your doorstep.


Our range of support options ensure you experience an easy and hassle free process when you need to talk to us about your Product Care® plan. Whether you are experiencing a fault, or wanting to redeem your entitlements, we will provide you with guidance and support every step of the way.


Having Product Care® with your purchase means you can enjoy a range of special benefits that are exclusive to you and will help you enjoy the experience of your new product even more.

Conditions apply. This section should always be read in conjunction with the Terms and Conditions for Product Care® Replacement.

Learn more about Product Care®.

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