Value: I would obviously rate this very high since I got these from a good friend who never really used them and sold it to me for (ok, expensive ones at that) peanuts (He has a couple of Shure's that sounded much better). For the money I paid for the sound it produces though (I guess I'm spoiled by my over ear headphones) I would rate it a solid 4 out of 5 in terms of value.   Audio Quality: The bass is very good, it's very solid sounding and punchy. The highs are thin and veiled sounding and the mids are darker sounding that I would want...

Quality - In terms of amp build quality, the unit is made up of metal and plastic which isn't really a bad thing. It makes the unit light yet very sturdy. The fit and finish of the metal covers are excellent, very tight and does not move around or jiggle when installed onto the unit. The only gripe I have about is the quality of the battery included in the package. They could have easily stuck in a 1500 mAh instead of the 800 mAh unit inside. Nevertheless, I can easily go to my local cell phone dealer and look for a higher capacity battery of the...

Design - The louvered design is something people will either like or hate. I personally like it since it gives it a very engineered look, just like a German car. The color combination is stylish and gives it a high end feel, very nice use of graphite and black with some silver highlights. I personally prefer these colors versus the 598.   Comfort - The velour pads have an edge in the inside but are still very comfortable, but the 558 pads are still a little bit better, they're rounded on the inside edges and are not as 'springy'. I can still...