1. Noise isolation: This headset is not designed to provide good insulation. He is completely open - every other sound in your listening environment comes in and the people around you will be able to hear what you play on the HD598. It should be clear to everyone that the headphones are not made for the city bus, subway, or a library. This headset is used for listening to music and movies, in the quiet seclusion of the home or studio. The openness is what this headset brings the incredible Soundkullise. No closed-back headphones can in this area, regardless of the price range, it come too close.
2. The 6.3 mm jack: At the end of HD598s a plug size that is not all so like depends. This is not the headphone jack on your iPod or your laptop. Will the HD598 to the adapter to 3.5mm jack plug? Sure, but thus you miss what these headphones can offer sound quality. You need a good source to raise this headset to life. One, when you do not have turn up the volume far until you can hear the subtle nuances.
3. The Bass: Sennheiser is known for brutal bass. Think. About HD5XX series, as our German sports car Some think, however, that they are boring or soulless those consistent, looking more than predictable balanced performance get one, exactly what you were looking for. They were designed for the same output level, frequency range pass over her again. People who are looking for a headset with loud bass, therefore should look elsewhere.
These are damn good headphones and sit perfectly on my head (well over a long period). I'm going in a few years when I search on the new headphones, buy again at Sennheiser.
One more thing in the end, this should not be a proper review, but only a few information regarding the bad reviews about this product. It may well be that one of the HD598 does not fit the desired application. But why the product as few stars missing?