Sharing my thoughts, reasons and impressions:
I have the HD 600 for a bit less than a month now. Its the new version that came out last year.
I was planning on buying a more expensive headphone, but the virus outbreak happened and then other things came into focus, like changing our car and upgrading my gaming things. I didnt plan to get the 600, because I had the 58X Jubilee before I moved to Europe, and I thought the sound would be kind of the same as that, maybe closer to the 650. I was about to buy the 6XX from Drop because it comes with the old box for storing, but then I decided for the 600, even though it came with a similar cheap box as the 58X comes.
When I came here to Europe I didnt plan to buy nice headphones, but in my first week in Lisbon (Portugal), I entered a store and there was an HD 599 along with a lot of other headphones to try out at will (you know, how they generally are in these stores). I tried it and end up getting it, since my husband insisted in giving it to me.
I also ended up getting a Fiio Q1 MK2 to use with the 599, and thats all I have for amp/dac for now.
In my old home, I used to mod every headphone I had, I posted here before but when I went away from this site, I erased most of my posts because I changed a lot after moving away. Aside from this one (
https://www.head-fi.org/threads/mas...ew-measurements.867972/page-147#post-14487319) in which I speak some nonsense and compare the 58X drivers and etc (used to care about these things).
I modded my HD 599 a lot too for some reason, not that I didnt like the sound, but its I really enjoy modding. Ended up messing up some things, but it still works fine.
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I honestly always felt something missing from the HD 599. It was not the case with the 58X, but I didnt wanted to buy that one again, and unlike with the HD 599 that you can find to try before buy at some stores here, they never put out more expensive headphones on the try out line.
I also got a Sony MDR1A to use outdoors, or while in the library of the college (I was doing college too before the Virus thing, for no real reason since Im retired).
With being home most of the time now, and having a store that sells most Sennheiser models just some minutes from my house, I decided to put out the 300€ and get the 600, and so I did.
People always point out how natural it sounds, and thats why I got it.
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The sound, well, I guess it sounds so natural, and it really does sounds strangely natural, because of the way the sound comes and dies. I dont know, and I wont try to explain very deeply how it feels to me. It is defenitely diferent than the 58X I had, or the 599 I have now.
I like to sit on my corner and relax, and its certainly makes me stay here for a lot of time... thats weird. I feel its has an imediate striking quality about presenting detail that might impress just anyone at first. I when people mention transparency, this feeling I have of being very close to the sound is what they mean, but maybe Im wrong.
Regardless, this is best caracteristc of this headphone for me, how it feels so real, it has more air up top than the 58X and everything feels a bit more defined.
I dont think I can compare this one much to the 599, since that one is kind of... very diferent, it does not make things so very defined as the 600, not even as the 58X did from what I remember.
Very satisfied, and cant recommend enough ^-^