>>106377871
>No 6XX since I'm europoor unfortunately.
I am, too. Even with the import taxes and shipping it's still the cheapest HD6X0 headphone. If not that then HD600 is the best of that entire lineup anyway so you could get that instead.
>Would the HE400SE be a upgrade to my old ass HD599? Or is it just throwing money at nothing.
Would definitely be capable of better bass with a low shelf filter and has better tuning out of the box. Build quality is far worse. Depends how much you like bass. It is capable of delivering good subbass which is something most Sennheiser stuff is incapable of, unfortunately.
>>106377747
FiiO FT1, ATH M50x. Maybe FT1 Pro if you want planars. HE400SE is out since
>I'd like something rather reliable
I have no idea how you broke your Sennheiser cans since my HD600 are over 10 years old and have outlived many of my other headphones, even if they're not getting much use anymore. I'll say that game zero is built like shit, though. Creaky piece of shit. From what I remember, it's branded as Sennheiser but built elsewhere compared to their regular headphones.