After much consideration I'm selling my ASG-2. The major problems I have are with the mid-bass emphasis and corresponding lack of sub-bass. Like eke said earlier, the bass port affects mid-bass more than sub bass, so if I want an acceptable amount of mid-bass then sub-bass extension suffers.
Honestly with mid-bass where I want it on the ASG-2, I can discern more sub-bass detail on the ER4S!
Also the mids. Trent Reznor's vocals on Pretty Hate Machine by NIN are buried, and there is sibilance on just about every "s".
I could say more but the ASG-2 just isn't what I'm looking for, and these issues keep me from enjoying them on a lot of tracks.
If anyone's interested send me a pm.
I PM'd you.....