I'm going to add a few more details even though nobody seems to care about these cans for some reason. After having launched the HD800S and the new HE-1 headphone, Sennheiser decided it was time to update the existing 5XX product line, of which the iconic HD598 is part of. The new HD598 is called the HD599 and that means it’s closer to the HD600, in more ways than you can think. In fact we have a pair of HD 599 demo unit in our office which, in my opinion, sounds slightly better than the HD 598. I can say that the sound signature of the HD 599 is the same, if not better, than the HD 598. Do keep in mind that due to burn-in and HD 598 will initially sound different than brand new HD 599. But if both are brand new, then they will sound very similar."

HD599? If yes Is there any differences between HD598 and HD599? If yes

The HD599 has an Impedance of 50 Ω, and not the iconic 300Ohm of the audiophile level units. Its frequency response is 12- 38,500 Hz, the sound pressure level (SPL) is 106dBSPL (1kHz/1Vrms) and THD, total harmonic distortion is <0.1% (1kHz, 100dBSPL).Not everyone is looking to satisfy the audiophile in them. Some buy gadgets just for the look they have to offer. The Sennheiser HD599 is absolutely perfect for getting that flex of owning a fancy and expensive-looking headphone. Looks and design The Sennheiser HD599 is a result of the company’s up-gradation of the 5XX series. Their iconic HD598 won a lot of hearts with its amazing sound quality. The HD599 is an improvement on the HD598. This model is closer to the HD600, and you can expect it has a close relation to its performance and quality in more ways than possible. Also HE4XX that i currently use doesn't have much bass by default, but with some EQ they have it more than enough and its really nice and realistic bass, the sub bass is pretty good ( sounds like my subwoofer, while the 598 for example is artificial af and has pretty much zero sub bass ), but to get the good bass on planars u need good AMP, since its like +12dB ( -12dB preamp ) on low end to compensate the volume. Without too much emphasis/deemphasizing the mid bass, the frequencies of the sound profile are excellent. As successor to our popular HD 500 series, the Sennheiser HD 5 model range offers high quality and value in any aspect. Powered by Sennheiser’s proprietary transducer technology including the “Ergonomic acoustic refinement” (E.A.R.) design, which channels the audio signal directly into your ears. Featuring a contemporary design that is both attractive and ergonomic. A real treat for all, who listen to their music with a sense of discovery.

AMP recommnendations for HD599 | What Hi-Fi? Forum AMP recommnendations for HD599 | What Hi-Fi? Forum

The HD 599 comes in your standard Sennheiser box. Inside, you’ll find the headphones, two removable cables, a 1/4’’ to 3.5 mm stereo adapter plug, and some nifty literature. According to Sennheiser the HD 599 is your first step into the world of audiophile sound and I couldn’t agree more. It’s smooth, easy to like and listen to but you also get good detail and depth resulting in a musical and natural sound. The HD 598 and HD 599 are extremely close in sound performance, with a slightly tweaked driver. Indeed the specs are the same – it’s mostly a facelift with different colour scheme and materials used. It's a necessary evil, where it overpowers the song but also contributes to the airiness and openness of the song itself.On "Don't Drift...", they're essential to the openness of the song. It sounds very spacious in there and you're relaxed. However, it can be a bit overpowering there as sometimes it can distract you from the detail, but more often than not, you will feel relaxed and happy with this mid-bass open on this song. On classical same story. The company has presented its most contemporary and modern designs in the form of this headphone. It speaks volumes when it comes to communicating enhancement, purpose, and an exceptionally good built. There are subtility and intricacies in its design that will reflect the superiority in performance just by the look of it. Well, i didn't heard the 599, but i heard from other "audiophiles" thats a bit better than 598 ( its like between 598 and HD600 ). The best gaming headphones IMO, are the ones that are best at reproducing binaural soundfields accurately. Newer game engines are becoming more realistic with spatial audio and headphones such as the 600 can actually create a more realistic sounding reproduction of a binaural sound field over the 598. It's the reason both HD700 and HD800 are good for gaming as well.

Sennheiser HD 599 review - Which?

The headband is made of brown leather and is pretty lightweight. It spreads evenly across your head and does not put pressure while it is clamped to your ears. The force with which the headpieces adhere to the ear is just the perfect amount. You will not feel a lot of pressure being exerted on your ears, neither will you get the feel of the headphone slipping off.When I listened to RapCaviar though, it becomes the Achille's heel of these headphones. It detracts from the vocals rappin out and overpowers the song along with the Lower-bass. Lower bass is good itself, but if combined with this part of the frequency it just detracts from the song entirely. The flexibility of the headphone is yet another outstanding feature of this product. It is much more flexible than any of the higher-end models, and you can use it as roughly as possible. The promise of German engineering is very well delivered by Sennheiser in this headphone. Other features and Price Not really sure about other options in Europe, maybe the cheaper DAC-X6 also ( 910mW ). Or if you're willing to wait longer and pay customs: You want to treat your ears to audiophile sound quality? This is the Sennheiser HD 5 model for you. With an impressively refined and natural sound and an uncompromising build. You’ve reached your goal.