Here's an excerpt ^ of the gaming comparison
DT990 vs Q701: Gaming (with Dolby Headphone)
- Those who have used Dolby headphone know that it very slightly smooth the highs. The Q's highs are already smooth enough in stereo, so they don't need this. It takes away some of their "air", which they don't have that much of to begin with. The DT990s DO need this smoothing. They still need even more smoothing though IMO.
- When gaming with Dolby Headphone the DT990 keeps up better with the Q701 then it does in plain stereo. The DT990's soundstage gets a good deal larger with DH than it does in stereo mode. I think the treble gives it some extra reach.
- In Dolby Headphone the Q701 soundstage is still a little better. The soundstage sounds a bit more diffuse, coherent, and fluid with the Q701s where the DT990 sounds a little more disconnected. In other words, it's harder to hear where one virtual speaker ends and the other begins with the Q's (which make them a little more immersive for me), whereas the DT990s it's a bit more obvious that it's jumping from one to the other. Again, probably related to the angled drivers.
- Positioning is pretty good on the DT990s, although objects out in front of you don't sound quite as nice as on the Q701s due to the DT990s having less depth and less front imaging. Probably goes back to what I said about the DT990 soundstage being more left-right centric in stereo wile the Q701s present a better and deeper image in front of you (angled drivers, again).
- Overall I'd rate the Q701 positioning/imaging a bit better, and separation a bit better on DT990s.
- The DT990 has less mids and more highs, so it can etch out and outline objects a bit sharper/better (sort of like AD700s), but they sound sort of hollow and artificial to me, and the placement sounds a bit better on the Q701s. The fuller mids on the Q701 gives objects more body and mass, although they aren't as sharply outlined as on the DT990s.
- I actually think the Q's have more of a home-theater-like sound than the DT990s. The flatter/less colored response of the Q's sounds more speaker like than the elevated highs of the DT990 (speakers shouldn't be producing that much treble). The DT990s low end response is nice, but the leaner mids make them lose some weight to the sound. The Q701s have nearly the same bass but more body and weight to the mids.
- I'd say the Q701s are still the most fun and immersive gaming can's I've tried, although they're not quite the best competive/fps cans I've tried. The AD700s still have the best raw positioning, and the PC360s are very good as well. I actually prefer the DT880s signature more for gaming than the DT990s. I bet the T1s would be fantastic (angled drivers FTW).
- The Q701s can be run straight off the MixAmp, even when mixing in chat. I will say that their soundstage clearly benefits when double amping with my M-stage. The M-stage increases the Q701's soundstage size a bit past PC360 size and closer to AD700 size, and the imaging/positioning got better as well. The Q701s didn't benefit when adding in my E9 amp though.
- I didn't try to run the 600 ohm DT990 straight off the MixAmp, and you probably shouldn't either.
Edited by chicolom - 1/26/12 at 11:42am