Sennheiser CX 400-B - Headphones ( in-ear ear-bud ) - black

If, like me, you have an iPod and can't hear stuff on it properly when you're on a bus or train or in a noisy café, these `phones are for you. The difference they make compared with standard iPod `phones is massive.
I spent several weeks using an iPod Touch on public transport and despite tweaking the volume of movies and podcasts in iTunes still couldn't really hear things properly unless the world went quiet. I didn't realise that the CX400s would totally transform the iPod experience.
Because not only do these `phones seal out noise, they also go a lot louder than the iPod `phones to start with.
So I'm finding I have the volume set to about half what I used to set it to. This can only have a positive effect on battery life.
The experience of being sealed off from the world inside these headphones is quite surreal but rather nice. It makes the world seem calmer, tunes out those annoying people who talk too loud, totally prevents you hearing other...Read more

Sennheiser has always been revolutionary with design and engineering for it's products. I bought a pair of CX300 earbuds about a year ago and have thought they were the best available...until today when I opened a pair of CX400 earbuds that I bought at Xmas and have been saving for when my current ones deteriorate from constant daily use. Well, the CX300s weren't showing any signs of giving up any time soon (i.e. getting staticy or muffled or falling apart), so I decided to be decadent and open my new pair before I really needed them.
I was stunned at the difference. The new ones are not as sharp sounding as my old ones, therefore adding definition and richness to the music that I had not enjoyed before. The bass is extraordinary, I can't imagine how they reproduce such low, deep bass at such loud volumes when cranked up...from such a tiny thing!!
The heritage lives on in these beautys. I completely get lost in the music when they're on and don't even want to talk...Read more

I was in the market for new noise isolating earphones as my CX-300's were stolen. I was satisfied with the CX-300's as they provided good noise isolation and a full range sound at a reasonable price.

When I started my research I was not aware of the CX-400 as they have only just been release. I was considering either the Etymotic Research ER6i or Shure SE210-K. Both have a lot of good reviews and I was leaning towards the ER6i, then I became aware of the CX-400. As they are new there are not a lot of reviews out there, but at the price I found them, I decided to take a chance. I already own 3 Sennheiser `phones, plus the stolen model and are completely satisfied with them all. My original over the ear headphones are almost 20 years old and are still providing great enjoyment. So basically I put my trust in the Sennheiser name.

Well let me tell you, Sennheiser have not let me down. In comparison to the CX-300's the CX-400 provide a lower, tighter bass sound,...Read more