my first audiophile headphone was the sennheiser hd 595s. wow. such a day/night difference from the bose i was listening to (which at the time was a major upgrade to the cheap Phillips headphones i had. haha)
then a few years later (& lots of research), i went all out!
i purchased the HD 800/Headroom Ultra Desktop Amp/Headroom Desktop Power Supply & it was sonic nirvana.
the newer hd800S cleans up that treble peak that some ppl were very sensitive too.
Alas, its been a couple years since i listened to my above rig. work & life hav taken over & i haven't been able to embrace my audiophile side sadly. it's kinda slipped away.
[EDIT]