Super bass, but somewhat dull sound

I was next to my Porta Pro looking for in-ear headphones with a corresponding BASS share.
The shortcoming of MP3 players, tablets and mobile phones is indeed that there understandably not just the
world's best D / A converter and headphone amplifiers are used and one must therefore make often just in the bass range quite a sacrifice. I had now come three headphones, all designed to produce on your ability to point list basses me:
* Sennheiser CX 275s (around 32, -)
* House of Marley EM-JE033-MI Uplift Midnight In-Ear Headphones (38, -)
* Sony MDREX50LPB (around 17, -)

Features:
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* House of Marley EM-JE033-MI Uplift Midnight In-Ear Headphones (short HoM):
This is undoubtedly the most qualified of the three headphones. The body is wrapped in wood and cables. HOM is not purely a headset, but also a headset. He has next to the microphone via a call answering, as a loud and a volume down button. However, the volume up and down button works only on the iPhone and not on Android (at least not at the present me Samsung devices)

All three headphones deliver two ear pads with in three different sizes.

Audio differences:
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To my test CDs among others included Stanley Clarke's 1993 album "East River Drive"
(One of the bestabgemischten albums ever - I mean) and Marcus Miller 2012er "Renaissance".
As D / A converter and headphone amp came with me the following hardware to use:
a) My PC with FiiO E7
b) Harman Kardon CD players with their own headphone output
c) Yamaha BD player with Yamaha RX-V2071
d) Samsung Galaxy S3
e) iPhone 4s

Important for the in-ear headphones is so that you put it as deep as possible into the ear so that they are properly "tight". If you put this slightly into the ear canal, come at least the bass does not feel right.
With the three headphones I have to really get the impression of three different weights in the frequency domain.

* House of Marley EM-JE033-MI
The House of Marley (short HoM), however, has a unique Basslastigkeit. Here you can the extreme bass sound thereby weaken somewhat, in which one does not push the headphones as deep into the ear. The headphones are all of the loudest.
Compared to the other two headphones you have here the highs by EQ lift, otherwise it sounds a bit dull.

* Sennheiser CX 275s:
The Sennheiser has (as described already by other reviewers) in a height range I find exaggerated proportion. Thus, the bass do not come to bear so as a be unpleasant previously the heights in the ears. These headphones are therefore more suitable for people who have age-related or caused by excessive noise exposure have a corresponding attenuation at the high notes in their own hearing and try to compensate for this possible.

* Sony MDREX50LPB:
The best headphones in the test is the Sony. The Sony sounds just brilliant, quasi as if this standard a loudness. Crunchy rich bass and crystal clear highs are the result. It has been positive enough, the impression not to miss anything, so a round harmonious acoustics. I'm excited. At the plant components of the Sony has almost already too much bass, but the yes is primarily intended as a mobile headset. Since the phones anyway not deliver as much bass, it is dosed just right for this.

Conclusion:
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There is a star deduction for the somewhat muffled sound. But I will keep the HoM as Headset. Due to the enormous volume can also make good use of these in noisy environments, or when the other party is speaking very softly.