Tuneslover
Headphoneus Supremus
Thanks, again. I had AKG Q701 and from what I read K701/2 sound very, very similar. I found the Q701 to be rather cold sounding and lacking in bass.
What about Beyerdynamic DT 990? My only concern there is that the treble spike much be a bit too much for my taste. I had DT 880 and found them lacking in bass and treble was nice but over-accentuated.
Or try the $149 Loki to "dial in" what's "missing" with the HD598. I'm going to try it in order to see how well/much my headphones can be tweaked to get what my noggin considers "perfect".