I've picked up a modded ATH-2 from a Head-Fier. I'm sure he's posted in this thread. I believe his mod was to dampen the sound. He's done various things from what I can see when opening them up. I'm seeing dampening material on the cup and some sort of material taped right behind the driver. I've taken them off to see whether I can tell a difference and I think I could. I remember noting a honkier midrange. I would've kept the dampening in either way. Just me curious in seeing what's inside.
Without EQ, I think they sound great for vocals, slow tracks, pop, and acoustic tracks. Alright for other genres like punk and electronic though definitely needs EQing in the sub-bass.
As for the stock sound, sub-bass is definitely rolled off quite a bit. Lacks low-end rumble, though still has a bit of mid-bass punch which is surprising. Mids are very Audio Technica. I don't know what it is but vocals have this sort of "gloss". Very ambiguous, I know, but female vocals sound very nice. Intimate and full. A bit like the AD2000, but lacking the upper mids and treble in terms of quantity. As for treble, it's quite rolled-off as well. Some may call this smooth, but I think it's a bit too much. More so than the HD650 I think.
When EQing, I wanted to add sub-bass, upper mid, and treble. This is where I'm at, and I'm liking the results a lot:
I did have an EQ on Equalizer APO, but it kept freezing my computer so I uninstalled it. This EQ here is essentially what I had on APO with way less frequency bands to work with.
When EQ'd, I think it compares very positively to today's headphones. Very nice tonal balance and detailed. Not thick or slow sounding either.
The future:
- Get another pair so I can keep these headphones as is and mod the other.
- Different earpads. I'm thinking ESW9 pads or whichever pads from Audio Technica's earsuit series.
- Custom (wooden?) closed cups for more isolation and possibly more bass.
- Custom headband system, so I don't look goofy with them out and about.
- Custom cable with a 3.5mm termination.
Overall, very happy. Back to team Audio Technica I go.
I also added a headband that I've stripped off of a 3 dollar headphone. No disrespect to the original owner with their light green headband haha.