Description

The Sennheiser MX-450 Upgrade In-Ear Headphones communicate midrange and higher frequencies nicely and give a very well-rounded sound and spatial presentation. They use a basswind system for extra bass and may be at their best with pop songs. A rewind system makes it easy to wrap up the cord, and the MX-450 comes with both a carrying case and a two-year warranty.
Technical Details
- In-ear headphones that deliver well-rounded sound
- Rewind system folds cord up
- Basswind system generates extra bass
- Carrying case provides easy storage and portability
- Comes with manufacturer’s 2-year warranty

Users reviews:
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Amazon reviews:
Although I'm not qualified to judge the sound reproduction, the clamshell case was a massive disappointment. The idea behind clamshell cases is that the earbuds sit in the middle and the cable is wound around it. How did Sennheiser get that simple concept so wrong?
The whole bottom half of the case rotates, including the cable slot. Gripping the case naturally on its edges touches both halves, so it's practically impossible to rotate and hold the case. Furthermore the cable slot rotates with the bottom half, so the cord has to flick around. There's a finger-size indent on the bottom half, but it's shallow and essentially impossible to use for winding. When the product packaging said "Winding Mechanism" I was expecting something spring-loaded, not a nuisance.
In other clamshell cases I have used, the winding spool and mechanism rotate inside the case, so the whole case can be gripped while winding. I'm able to wind and unwind in about 2 seconds flat.
Also the Sennheisers use an awful felt around the earpiece. I have Denon earbuds and they have much nicer rubber.
The cord is a bit shorter than a standalone cord should be, and slightly too long for most plug-in remotes, but it's not a grave design flaw.
These are workhorse headphones, best for travel or gym-ish activities. Along those lines, you could do plenty worse for $15.
This isn't to say Sennheiser doesn't make good headphones: I own a pair of EH150s, and they are really nice with amp.