I became a head-listener about 2 years ago, is to say, since I hear almost exclusively about KH. I own 2 Beyerdynamik (DT 660, DT 990 and an AKG 701. FIG. There are also some older or simpler KH (Sennheiser HD 440, AKG450 Navy, Koss Porta PRO) and a Bose In Ear SIE2. All these KH are significantly more expensive than the Presonus HD7. I did not believe it myself, but the Presonus sound returns in the same league as the 3 former KH, but many times (int. 150 and 220 euros) cost! He is the AKG 701 not unlike, and furthermore has even a slightly deeper bass (the not "deafened", but well accentuated comes across). In this regard, it is somewhere between the PortaPro (I use only for MP3) and Beyer 990th I can not explain how Presonus makes for that price it. But my praise is mainly related to the sound. Although the course is an important factor but not the only one. And here it gets for the Presonus now but a bit cramped. He looks a bit "contrived" out, I mean that its plastic casing was trimmed to Chic, simple materials you can see him but to. When I look at him, I think of plastic roses from the shooting gallery. To what extent has affected the durability show up, I've only had it for 1 day (but it has often heard). The comfort is unfortunately correspondingly moderate; the plastic makes the ears are heisss quickly. Too hot for hours of use. Let's see how annoying I find that in practice. My conclusion: Anyone looking for a KH and will remain well below 50 euros, should the Presonus listen times. My Collection enriches - and critics for the first sound a special fascination for me. Man, so much sound for 29 Euro. I will somehow take care of the Ohrposlter. Could one make ähnich comfortable as the 701 would be the HD7 probably the Firecracker - and the competitors would almost sweep. Listen on occasion