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Sennheiser CX 550 Style II In-Ear Headphones

Released on 18 December 2008

Manufacturer: Sennheiser

4.0 out of 5 (12 customer reviews) | Write a review

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Premium, metal-crafted ear-canal headphones giving a natural, balanced sound with high ambient noise isolation. Includes carry pouch.

Enjoy an exceptionally natural sound experience with the high-quality CX 550 Style II. These sleek ear-canal phones produce a balanced sound with the highest possible sound resolution. Smooth, brushed metal parts accentuate the unique design of the CX 550 Style II . The unique design of their housings as well as the inclusion of a set of extended ear adaptors (S/M/L sizes) allow for a personalised fit in the ear-canals and a high passive attenuation of ambient noise. Their short cable is perfect for use with a mobile phone or MP3 player with a remote-control and/or microphone. An extension cable has also been included in the delivery, allowing you to pair the CX 550 Style II with a player in your pocket.
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  • Key Features:
  • In-ear earphones
  • Frequency response (headphones) 17 Hz - 22,500 Hz
  • Cable length 0.6 m (+ 0.8 m)
  • Impedance 16 ohm
  • Sound pressure level (SPL) 114 dB (1kHz/1Vrms)
  • THD, total harmonic distortion < 0.2%
  • Transducer principle Dynamic
  • Weight Approx. 12 g
  • Delivery Includes
  • CX 550 earphones
  • Extended ear adapter set (S/M/L)
  • 0.8 m extension cable
  • Cable clip
  • Carrying pouch
  • Pack contents:
    Sennheiser CX 550 Style 2 Headphones

customer Reviews

 Average rating (12 reviews)

 Incredible Headphones - Better than the CX-300-II ECOs

| | See all MetalHead2007's reviews (5)

So, my venerable Sennheiser CX-300s bit the dust a week ago and I was looking for some replacements. I decided to try the CX-550s, as I had seen them on PlayTrade for around 24GBP - which seemed to be a bargain, seeing as they retail for around double that.

I wouldn't normally discuss the purchasing in a review, however when I had ordered from Play.com I discovered why I had paid 24GBP. The CX-550s I received were fakes (I wish I'd taken photos now, but alas I was so annoyed I forgot!).

After emailing backwards and forwards with the supplier, he reeled off a sob-story about a second supplier and offered to replace the fakes with genuine Sennheisers. I accepted the offer, as I did actually want my headphones.

I've just (as in 30 minutes ago - I'm using them right now) got the replacements, and they are genuine Sennheiser 'phones. Result - albeit with more hassle than necessary.

Right, no onto the meat of the review. I've not written one of these before, so bear with me. I mainly bought the 550s as a replacement (and upgrade) for my 300s, and they are just that. I only have the 300s as a comparison point, so I can really only reference those.

After first listening with the standard silicone ear-pieces, I switched over to the double-flanged ear-pieces supplied with the 550s - and they make so much difference in the high- and mid-ranges.

The first thing I did when plugging the 550s into my Zen was turn off the bass boost I had enabled for the 300s, as they seemed to lack "punch" on the bass - no such lack here. The bass is definitely present, but with that lovely, crisp "punch" rather than a flabby "boom".

My Zen ran out of juice at this point, so I switched over to my desktop PC sound rig.

The other thing is the relative clarity in comparison to the 300s. There is a lot more of the high-end; crash cymbals sound crisper and guitars have a lot more "mid" and "squeal", but at the same time sound more concentrated.

In terms of EQ, I'm using about +2dB of 80Hz and +1dB of 2.5KHz on my Benhringer Xenyx 802 mini-mixer, and no software EQ. Sound source is 320kbps mp3 played through AmaroK on Fedora 12 Linux, with an ASUS Xonar Essence STX sound card.

After asking the other half to keep a look-out for them in London in case the PlayTrade seller didn't send my genuine replacements, it seems like the 550s have been discontinued by Sennheiser, which is a real shame. The best alternative I can see on their website are the CX-870/880 range, which are a good deal more expensive than the 550s, even at retail.

If you decide to buy them from a non-mainstream re-seller, be prepared for the worst. I found this forum post extremely useful, and there was also a comparison image (I can't find the URL now ) detailing how to tell the difference between fakes and genuines. The differences as far as I can remember are:

* Cone-shaped driver mesh (genuines should have straight)
* 1mm gap between driver head and main IEM body
* No cable-clip in packaging
* Relatively unprofessional packaging (cables just stuffed into the bottom pouch rather than being cable-tied)
* No flanged ear-pieces

My advice - if you can get them, these are fantastic headphones and a worthy upgrade to CX-300s for a reasonable price.

 Best Headphones I have bougt so far.

| | See all surfer6969's reviews (1)

Wehn I bought my first iPod (3rd Gen B&W) the headphones provided were terrible. I then went for Apples own In-Ear headphones and I thought they were the best thing since sliced bread. I did eventually tire of these and decided on a change and got a set of Skullcandy Skullcrushers, these once again upped the quality and I was very pleased.

I decided to go back to In-Ear and read several reviews of the CX-500's and personally they have once again raised the standards of headphones for me, the clarity of the treble whilst dealing with punchy bass is spectacular. I am used to dealing with great sounding audio (seeing as I have a £2000 Rockford Fosgate Car Audio System) and these headphones make my private listening very enjoyable.

I do recommend these without a doubt.

 excellent earphones sennheiser cx 550

| | See all phatnek's reviews (1)

These phones are comfortable and they fit securely - as well as having quality build and components.
The sound is meaty in the bass but not overpowering, with a clear and sweet treble and mid range.
I also have the excellent CX300 phones but I have not listened to them since I bought the 550s 3 weeks ago. All I would advise if you are making the changeover is to give them time to be appreciated - it's not a night and day difference - but over time you will appreciate the quality bass and improved levels of detail retrieval. Highly recommended.

 Outstanding quality and value CX 550

| | See all mightypepperoni's reviews (1)

Simply stunning quality - I've owned Sennheiser before and wanted to upgrade for use with my new HTC Desire. Excellent. Only just had them so can't comment on reliability yet but if anything goes wrong I will post again.

 One thing ruins these

| | See all shorty1988m's reviews (2)

The length of the cable is ridiculous. Minus the extension these do not fit in your pocket but with it makes the wire run down to your knees then back up. Altogether a good product but the stupid wire has totally ruined this product.

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