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  1. Earbuds

Sennheiser CX 400-II

8,7/10 (165 reviews)
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Sennheiser earbuds
Sennheiser CX 400-II

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Product information

Key specs

Type of ear cushions
In-ear
Noise canceling
No
Sound quality according to customers
Very good
Carrying comfort according to customers
Good
Bluetooth
No
View all specifications

Pros and cons

According to our earbuds expert
  • The cable clip allows you to easily attach the cable to your clothing.
  • The earbuds don't have an integrated microphone to make hands-free calls.

Description

With the Sennheiser CX 400-II earbuds, you'll experience a powerful and dynamic sound. These dynamic earbuds give your music extra power and depth. A broad frequency spectrum ensures clear, treble tones and a captivating bass without distortion. You can easily find earbuds with the best fit, because 3 sizes of earbuds are included. The cable clip allows you to easily attach the cable to your clothes.

With the Sennheiser CX 400-II earbuds, you'll experience a powerful and dynamic sound. These dynamic earbuds give your music extra power and depth. A broad frequency spectrum ensures clear, treble tones and a captivating bass without distortion. You can easily find earbuds with the best fit, because 3 sizes of earbuds are included. The cable clip allows you to easily attach the cable to your clothes.

Tips for using this product

Tips for using this product

Read our tips and find out all about how to set up your product and use it the right way.

View all support

Included by default

  • Manual
  • 3 sizes of earbuds (S, M, L)
  • Cable reel
  • Cable clip
  • Storage pouch

Included by default

  • 3 sizes of earbuds (S, M, L)
  • Cable reel
  • Cable clip
  • Storage pouch

Key specs

Type of ear cushions
In-ear
Noise canceling
No
Sound quality according to customers
Very good
Carrying comfort according to customers
Good
Bluetooth
No
View all specifications

Reviews

165 reviews
8,7/10 (165 reviews)

Rating

77 reviews with 5 stars

77 reviews with 4 stars

10 reviews with 3 stars

1 reviews with 2 stars

0 reviews with 1 star

Customer images

Most helpful reviews

10/10

This is really a hit!

  • Beautiful sound.
  • Very complete!
  • Angled mini jack plug, I find this quite annoying.
  • Marcel zonderman
  • 19 July 2010
  • Automatically translated from Dutch
9,0/10

Throw your Apple earplugs in the trash!

  • great sound
  • Good sound insulation
  • Good insulation makes for poor usability when, for example, running
  • Mitchel
  • 16 August 2010
  • Automatically translated from Dutch
8,8/10

Price/performance ratio is music to your ears....!

  • Sound quality (low, mid and high frequencies)
  • Accessories
  • Very low tones are barely audible
  • Richard
  • 10 May 2015
  • Automatically translated from Dutch
9,0/10

Excellent insulation

  • Kramer
  • 12 August 2011
  • Automatically translated from Dutch
8,4/10

one of the best IEMs on the market!

  • Great spatial sound
  • Beautiful design
  • packaging
  • Cedric geeraerts
  • 15 August 2014
  • Automatically translated from Dutch
9,6/10

Durable, fantastic material and beautiful sound

  • durability
  • sound
  • volume on device is apparently sensitive
  • Cees verhagen
  • 27 December 2014
  • Automatically translated from Dutch
9,0/10

sennheiser vs ipod earphones

  • Niel deijgers
  • 25 September 2012
  • Automatically translated from Dutch
8,8/10

Immediately convinced!

  • Sound quality
  • design
  • Fragile cord
  • Anja
  • 30 January 2015
  • Automatically translated from Dutch
10/10

Nice!!

  • Fantastic sound.
  • Couldn't find any flaws.
  • Dick terweij
  • 2 February 2010
  • Automatically translated from Dutch
8,4/10

Great sound, good price / quality

  • Sound
  • Different 'caps'
  • Storage pouch is a bit simple
  • Roelin
  • 3 February 2015
  • Automatically translated from Dutch
10/10

This is really a hit!

  • Beautiful sound.
  • Very complete!
  • Long cord.
  • Angled mini jack plug, I find this quite annoying.

I just bought these, this time did not order here, because I found them elsewhere (just as expensive), but from experience I can say that these shop(s) really have perfect service! Even if they haven't even been "run in" yet, it already sounds perfect! Nice low, mid, high ratio, bass sounds good and the sounds are nice and clean! You get great value for money because you get a whole range of different tips, so there is always one that fits comfortably in your ear. There is also a storage pouch which is very handy. This is actually a bargain!!

  • Marcel zonderman
  • 19 July 2010
  • Automatically translated from Dutch
9,0/10

Throw your Apple earplugs in the trash!

  • great sound
  • Good sound insulation
  • Supplied accessories
  • Good insulation makes for poor usability when, for example, running

As a music fanatic, it is a relief to listen to this caliber of earplugs.

I had been looking for good insulating high quality earplugs for some time, but because I'm still a student I don't have the money for the even more expensive class. After a lot of research, this made the Sennheiser CX-400-II precision earplugs ideal for me.

I listen to music in many different situations. To name a few: At school, during my work (postman), on my bike and while I'm running. Furthermore, I am not an audiophile, but I do find it extremely important that the music I listen to is clear and that the different instruments and parts can be clearly distinguished.

The sound quality of these in-ear headphones is great in my opinion and can't be compared at all with earplugs that fall in lower price classes. The sound is crisp, clear, warm and very distinguishable. The sound is also not bass-driven, which you do hear in many other earplugs. All in all, this provides a beautifully balanced listening experience for those who want to listen to the music uncolored. On the other hand, people who like big bass will probably be disappointed.

The supplied ear rubbers (for lack of a better term) fit me well and will probably also fit other people well. You can choose between a fairly tight connection between the ears and the earplug or a fairly loose one. In both cases, the earplug stays in place, only the extent to which noise is isolated from the outside decreases. However, a disadvantage of this insulation is noticeable when the earplugs are used in a mobile situation, the vibrations of the cord are therefore clearly audible.

All in all I am very pleased with the value for money and if they were stolen I would definitely buy them again.

  • Mitchel
  • 16 August 2010
  • Automatically translated from Dutch
8,8/10

Price/performance ratio is music to your ears....!

  • Sound quality (low, mid and high frequencies)
  • Accessories
  • Price to quality ratio
  • Very low tones are barely audible

After wearing out my last set of Apple earbuds that came with the Apple products, it was time to look for something new. As a student, I love listening to music on my way to school. After looking at various products and reviews here on Tweakers, I chose the Sennheiser CX 400-II. Cooblue also came out on top as the cheapest so that's great!

In the box
In addition to the earplugs, there are 5 different silicone tips in the package. With single ring small, medium and large. And my double ring, small and large. In addition to this, there is also a holder where the caps can be pressed. You can then wrap the wire around this and place it in its entirety in the (fake) leather storage case.

Build quality
The jacket is at an angle of 90 degrees. Whether this is a good or bad thing varies from person to person. I do notice that the large jacket quite often gets caught in my pocket when I try to take out my mobile. The build quality of the jacket is excellent and it is impossible to break here. The cable from the jack has minimal strain relief. I have heard from several people that this is also the place where the CX 400-II breaks down first. The cable from the jack to the splitter is quite thick and will not get tangled quickly. There is also a volume control in this part of the cable. This one is sturdy but feels cheap because it is very light (update: 9 months later the slide is suddenly gone so that I can see the inside of the regulator: See photo). When the slider is on the lowest volume, the music can still be heard, I have no problems with this, but there is no way to completely mute the sound. The cables after the splitter are a bit thinner. The strain relief to the caps themselves is very good. This makes a cable break almost impossible here. The earplugs themselves also feel sturdy. The silicone caps are very tight. So these will not quickly fall off and get lost.

Sound quality
Although playing in has its pros and cons, I still let the caps play in for ~30 hours before I listened to them. Then I tested the earplugs with the following 3 songs via a laptop.

John Mayer - Wait Until Tomorrow (320 kbps)
Mumford & Sons - Dustbowl Dance (Live version (256 kbps)
Noctilucent - In Love (320 kbps)

At first I was amazed at the sound quality of the earplugs. In the first track (Wait Until Tomorrow) I heard sounds in places that I hadn't heard before from the Apple earbuds and my headphones. He also played the live music of Mumford & Sons beautifully. I was much less satisfied with the song In Love (Chillstep genre). The magic of this song is in the extremely low frequencies. These were unfortunately barely audible with the use of the earplugs. Also by playing with an equalizer I couldn't conjure up the tones. Although the bass is good in almost all songs, it just didn't seem to be able to play these very low frequencies at a decent volume. I don't know whether this is due to the CX-400 or to in-ear earplugs in general.

A few weeks later
I've been using them almost daily for several weeks now and I'm generally happy with the earplugs. They cut off outside noise wonderfully so that I can fully enjoy the music on the way to school. That's why I bought them in the first place. The only two negatives that I can report after nine months are the sudden disappearance of the volume control and the barely being able to reach (extremely) low frequencies. I only notice the lack of these low frequencies with a few songs.

Tip: If you plan to purchase the earplugs, push the earplugs into your ears as far as possible. They only give a good sound reproduction when they are properly sealed.

  • Richard
  • 10 May 2015
  • Automatically translated from Dutch
View all 165 reviews

Specifications

Product

Product number
62852
Manufacturer code
502743
Brand
Sennheiser
Warranty
2 years
Processing of your defect
Carry-in warranty
Old product returned for free
Yes

Physical properties

Weight in grams
124 g
Color
Black
Material
Plastic
Built-in microphone
No

Resistance

Water-resistant
No

Connection

NFC
No

Bluetooth

Bluetooth
No

Power supply

USB port
No

Sound

Sound reproduction
Stereo
Hi-Res audio
No
Sound quality according to customers
Very good
Noise canceling
No
Volume limit
No
Frequency range
17 - 22000 Hz

Casing

Headphones wearing method
Earbud
Type of ear cushions
In-ear
Remote control on ear cups
No
Carrying comfort according to customers
Good

Awards

Best tested
No

Cable

Detachable cable
No
Ribbon cable
No
Coil cable
No
Braided sleeve
No
Remote in cable
Yes
Connectors
3.5mm mini jack
Volume control cable
No

Accessories

Earbuds (sleeves) included
Yes
Number of earbuds (sleeves) included
3
Size
L, M, S
Headphones adapter included
No

Related products

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