Long time lurker, first time poster, but now after 6 months with HD660s, finally something I can ask and understand the answers
![Headphone Smile :) :)](https://cdn.head-fi.org/e/headfi/smily_headphones1.gif)
I should probably note I'm driving them with a simple E30/L30 stack.
To start, I love the 660s, absolutely adore the fact that I can jump from early Judas Priest into Vivaldi's four seasons, back to Jefferson Airplane and move to Atrae Billis without feeling like something is missing or not sounding right (I listen to almost everything, with all of metal being primary). Did try all of the standard EQs for them, with neutral reference being to me at least substantially best of the offered (especially against the Harman curve one's), but each EQ was quickly cleared, after which a few songs and a walk around the block is needed to stop hearing the warmth as a veil, and move back to just enjoying them.
As a comparison point, I did get the Etymotic XR3s for on the go listening, while I do enjoy classical on them, they seem to be a bit to critical and thin for most metal, pushing me right out of the music, while at the same time not resolving as much as hd660s do. It's, to me at least, a weird listen that can be satisfying at times.
With that said, and question is to someone who probably knows 660s well.
Is there a high end headphone that addresses a few things:
Bit more attack, especially for technical death, power and early heavy metal. (say, bit more kick in Painkiller intro)
A bit more detail, but not at a cost of not being able to enjoy music.
That keeps the mid forwardness at least to a certain extent.
And that can equally be an omnivorous type of headphone.
I'm perfectly fine with closed back designs as well, spent most my life listening to one iem or another, having a sound stage is nice but not a must.
PS. Thanks to everyone for being part of this thread, was really helpful when looking where to start in this insanely complex hobby!