Thank you so much for putting so much effort in writing all this. Highly appreciated! I found 2nd hand Momentum M2 for almost half price. They seem to be original (as a seller mentioned, that he can even give proof of that). I may just get them. I'm not any close to drop HD555 – they are...

I don't have that much time tbh. Looking up for prefect set of cans can be painful. I need one solid recommendation "get those, they will be good". Thanks for your answer, much appreciated. I know that HD600 are not for me. If you have some time, you can look this up...

I see, thanks for letting me know. I don't know what to do now TBH, as Fidelio X2 is not an option. :/

Is this the thing? I found it really cheap 2nd hand. 

Objective2+ODAC you mean? It's quite expensive, as much as I'd like to spend on headphones tbh. Are HD650 any better in genre I listen to? I like my HD555 a lot, but they don't sound well with dubstep, which is part of my playlists. 

To sum everyyhing up: If I don't need closed or portable headphones, in my case and genre, Fidelio X2 will be the best and, in addition to that, they would be upgrade for my HD555, on current DAC.   Is that right?

Thanks for letting me know guys. I'd still like to hear some words about M2 as they seem to be nice. Fidelio X2 is still an option, but I need confirmation that they are good synergy with dubstep/trap music. 

I know HD600 are great headphones – the thing is that I'm not sure they will fit my genre (electronic music). I love HD555 but low end is lacking.   I'm open for any proposition – I just personally thought closed headphones would be better. If any other open headphones can perform well – not a...

Will those Soundmagic have any compare with quality of HD555 or M2? I thought you cannot buy good cups from less known companies. In fact I had one Soundmagic (earbuds) and they broke really easy and didn't seal well. Are M2 bad choice for me? I seem to really like them – didn't have chance to...

Hello guys!   I'm thinking about buying M2 as an upgrade for HD555. I have my HD's for quite some time, in fact about 5 years. They are great sounding headphones, still working. Although I need some revolution instead of evolution. Normal evolution for these will be HD600 or HD650 – but I'm...

Hello guys!   I'm thinking about buying M2 as an upgrade for HD555. I have my HD's for quite some time, in fact about 5 years. They are great sounding headphones, still working. Although I need some revolution instead of evolution. Normal evolution for these will be HD600 or HD650 – but I'm...

Hello guys!   I'm thinking about buying M2 as an upgrade for HD555. I have my HD's for quite some time, in fact about 5 years. They are great sounding headphones, still working. Although I need some revolution instead of evolution. Normal evolution for these will be HD600 or HD650 – but I'm...