Synergy plays a part as to why some headphones perform better than others when it comes to positional sound gaming. No doubt when designing the GSX, Sennheiser made it to be an ideal match with their headsets. Headsets which are designed to excel when it comes to gaming. For headphones, music is the primary focus; and while a lot of headphones also work well as gaming headphones, not just for music; the synergy is not always going to be there with certain audio products, because they're designed separately.
While general frequency response might have slight tweaks trying to tune it for certain specific headphone frequency reponse isn't good thing.
Because in smaller scale frequency responses have vast differences it would easily cause problems with many of them.
It would be like music player which can play only one song.
Like non-neutral bad high freguency response amplifier might work with some treble heavy headphones, but would be really bad thing for weak treble headphones.
(not to mention that being no excuse for performance of amplifier)
And HD595s definitely don't make GSX's algorithm work better in this:
https://www.youtube.com/watch?v=b6CDgwtVcbg
But headphones can definitely work very differently in different things.
Like if some headphones are especially good for vocals that does in no way mean them being automatically good at other frequencies.
Or small sound stage headphones bad in almost everything might give "agressive" first row feel in some music.
Those T*rd Beach Z60s I've had chance to test actually had such behavior.
While in overal being painfully miserable total junk for gaming and movies compared just to cheap HD330 Superluxes.
Ah that makes sense, don't get me wrong the fidelio still sound amazing and ill probably keep them due to comfort, i just need a good microphone to go with them and was looking at the modmic. anyone here tried them?
While not that cheap Modmic works well for what it's meant for: Communication.
Best sound quality is actually "incompatible" with features good for communication.
Like noise cancelling/unidirectional capsule design having worser frequency response than omnidirectional.