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Sennheiser CX 300 II Precision Noise Isolating Earphones - Black

4 out of 5 stars 1,621 customer reviews
| 42 answered questions

RRP: £44.99
Price: £24.29 & FREE Delivery in the UK. Details
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Dispatched from and sold by Amazon. Gift-wrap available.
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  • Easy upgrade from standard ear-buds; for those who crave great sound in a compact, portable package
  • High-quality dynamic speaker systems for bass-driven stereo sound and durability
  • Personalised fit in the ear canals to function as an earplug and high-quality speaker
  • Convenient carry pouch included for safe and storage and transport
  • Asymmetrical cable reduces tangle and cable clutter

There is a newer model of this item:

Manufacturer Warranty
Sennheiser products sold and dispatched by carry the Sennheiser limited warranty. Learn more here.
£24.29 & FREE Delivery in the UK. Details In stock. Dispatched from and sold by Amazon. Gift-wrap available.

Frequently Bought Together

  • Sennheiser CX 300 II Precision Noise Isolating Earphones - Black
  • +
  • Sennheiser CX300 replacement ear buds - 10 pack Small ear sleeves
  • +
  • AKORD AU-61 Hard Carrying Case Bag for Earphones
Total price: £26.83
Buy the selected items together

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Colour Name: Black

Product details

Colour Name: Black
  • Product Dimensions: 11.8 x 411.5 x 243.8 cm ; 5 g
  • Boxed-product Weight: 91 g
  • Delivery Destinations: Visit the Delivery Destinations Help page to see where this item can be delivered.
    Find out more about our Delivery Rates and Returns Policy
  • Item model number: CX300 MK II
  • ASIN: B001EZYMF4
  • Date first available at 1 July 2006
  • Average Customer Review: 4.0 out of 5 stars  See all reviews (1,621 customer reviews)
  • Amazon Bestsellers Rank:
  • Click here for information about recycling electrical and electronic products

Product Description

Colour Name:Black

Product Description

Get a powerful, dynamic sound with big bass response in a stylish, custom-fit ear canal phones. An asymmetrical cable provides freedom of movement and the included carrying pouch avoids tangles in transit. Offering a powerful, bass-driven stereo sound with greater clarity and improved dynamics are the CX 300-II Precision Black ear-canal phones. The various sizes of ear adapters (S/M/L sizes) provided in the package allow for a personalised fit as well as a high passive attenuation of ambient noise.

Box Contains

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

  • Customer Reviews

    Top Customer Reviews

    Colour Name: Black Verified Purchase
    Got these a replacement to the CX300 mk1s which I have been using every day as I walk to an from work.

    First thing to note is the build quality. A bigger, gold plated jack looks and feels alot sturdier. Its bigger size has however not been a hinderance. The junction reinforcement, where each cable splits off has also been beefed up making these feel much more resilient. Not much has visually changed with the driver unit, it has now got a sloped back but overall looks to be the same size etc.

    The biggest difference comes in the sound department (where it matters!). The bass response is much better and is pretty astounding for in-ear headphones at this price. I quite like walking along to the odd dance track and tunes like Mylo - Destroy Rock 'n' Roll (Tom Neville Clean remix) sound excellent. The bass has plenty of weight and presence and the high end is tight & crisp.

    I'm not going to comment on how well these head phones fit as that is a completely personal interaction, they either will or they wont. There are three different sized rubber ear pieces included, so hopefully one pair will work. There is also a soft sprung clasp pouch included, for stowing the headphones when no in use. This is a welcome extra but I've reverted back to my usual hard shelled tin as it offers a bit more protection whilst bouncing round my bag.

    To summarise, if you already own CX300s, the mark twos are a worthwhile upgrade. If you are in the market for in-ear headphones, these should not be overlooked. Top Quality Sound and Build for next to nothing.

    **** ONE YEAR EDIT ****

    Well after a year of daily use (hour walk to and from work) a connection in the left ear has gone. Resulting in only faintly audible levels coming from the left hand side. There's a two year warranty so it should be covered.
    9 Comments 231 of 239 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    Colour Name: Black Verified Purchase
    Alas, I am no longer at the mercy of rubbish, overpriced Apple earphones.

    I was once happy to call myself a proud owner of Sennheiser earphones. I used them everyday, starting from the moment I'd leave the house, and couldn't be more pleased with the quality of sound delivered. On one fateful day, over 2 years after they were purchased, they were snagged by a hook on the train, which rendered them useless and left me feeling utterly desolated.

    Having bought an iPhone 5, the newest, coolest phone on the block at the time, I was sure their redesigned earphones would do the trick. Ah, if only that were the case. They work alright when I'm at home in utter silence, but if I dare attempt to use them in a noisy environment, I hear nothing but faint voices and murmurs in the background. Maybe it's my brain telling me it's time to get some Sennheisers.

    I am pleased to have succumbed to this temptation. I bought these only 2 days ago but I have not enjoyed my music this much in a long time. The sound is crisp, the bass is thick and distinguished, the voices sound natural and clear. You know that loud, annoying group of friends chatting hysterically when you just want to listen to your damn music? You can forget about them. And the wailing baby. And the vigorous roar of the bus engine. The Sennheisers will clog your ear up, and you won't hear squat from the world around you unless it damn pleases you.

    All in all, 5 stars. Does exactly what I want it to and no more.
    Comment 106 of 111 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    Colour Name: Black
    I bought these earphones almost 7 years ago, in a shop on the town high-street. That in itself is quite a feat, the fact that they haven't broken, haven't deteriorated in sound quality and still look pristine is amazing.
    I have used them in every which situation, took them with me to school and used them for a few hours every day, come home and exercise with them in. This includes running, lifting unpleasant heavy things, and boxing. They've been stood on, thrown about, even gone through the wash a couple of times and yet they remain defiant and undefeated.

    Although I claim these to be the best earphones I've ever had, due to the longevity of these things - I haven't much of a basis for comparison. Before I got really interested in tech I was a fan of Skullcandy, mostly because they looked cool when I was 12. I had a few pairs of them. These absolutely blow them out the water in every single aspect, Sennheiser really are at the very top of my list for audio-related needs now.

    They sound quality really was brilliant when I first got them, and they remain so nowadays. Obviously in-ear buds won't ever be able to compare to the likes of over-ear headphones like the Audio-Technica ATH-M50X's, but this really is top of the line for it's field, in my opinion. The lows, mids and highs are all so clear and crisp, and they're really capable of adjusting when you fancy pushing the limits on the equaliser. Not to mention the noise isolation, which really does work very nicely. Especially if like I did, you had to get a very loud and overcrowded 50-minute bus journey to school and back every day.

    Congratulations Sennheiser, you da bomb.
    Comment 23 of 25 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    Colour Name: Black
    okay, usually i never leave reviews (i know) but this time i wanted to.

    i got an ipod nano on offer with a new mac, and wanted to get a pair of headphones for it (the apple ones don't stay in my ears, and they're not the best). after looking around for a while, i settled on the sennheiser 448s. these are large, fantastic headphones, don't get me wrong, and are great plugged ionto my hi-fi, but not for an ipod (especially with the e.u. noise-cap). they just did not go loud enough, and i'm not someone who listens loud. really, the ipod was not powering them.

    so, i bought a fiio e5 headphone amp...not much difference, in fact hardly any. so don't go there...

    then i decided to try another pair of sennheisers, recommended to me by a friend. cx300(II)s, in-ear. and what a difference! they go louder than i need (maybe the 448 drivers were too big, needed too much power), have a great sound right out of the box, cost half of the 448s, and are small enough to carry around with no problems.

    i highly recommend these headphones. i looked at beyerdynamic, klipsch, but at the end of the day, for £25 what more do you want? small, great sound, and powered more than well enough by the ipod nano. the bass is nice and present, without any distortion, the treble end is clear without whining or grating and the middle is nice and full. Really, before getting these i had almost given up on the ipod, and they have been one of the few products that i have been genuinely surprised by. i'd definitely buy them again.
    Comment 11 of 12 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    Colour Name: Black