Something which makes the AKG 7-- headphones hard to rate, is the
fact that the manufacturer(s) keep changing their sound.
A few years ago, I had an Austrian made K702. The soundstage
was huge and I enjoyed that. They needed a bit more bass, though
IMO. Sold them for a bit of a premium when the Chinese version
hit the market.
Had the Q701 two separate times, and it just did not grab me.
IMO it didn't do anything particularly well; it was just another
good headphone.
Then, curiosity got the better of me and I bought the Chinese K702's.
Wow! I thought they were very good. A rich, full sound, smooth...
audible bass, well balanced. The huge soundstage was no longer
present, but with the new pricing they were an excellent value.
And the build quality seemed on par with the Austrian version
I'd had.
But I did sell them...you know this hobby.
And today?
I saw the K701's at an incredibly low price on Amazon, and bit.
The first thing that knocked me out was the bass!
These were always knocked for their light bass - since
their release.
But now they have real, honest to goodness bass.
(I'm using a Gustard H10 amp, BTW.)
The soundstage is large; not immense.
Treble is pretty good overall, though there
seems to be some roughness in the upper midrange/lower trreble.
Anyway, they are far better than I anticipated based on what I'd read -
and more importantly based on my experience with the K702's and
Q701's (2X).
As far as I'm concerned, it's become a fool's errand to compare these
headphones except in the present - and even then, care is warranted.