MLE, I have to say, I might have to take back some of what I said about the soundstage differences, and the Q701 still projecting out a few feet more. I think the anniversary is actually very close to the same size, but I just wasn't used to their sound and their weight.
They're now sound more like a similar situation to when I compared the old K702 to my Q701, where the weight could throw you off about the soundstage size.
I knew going in to watch out for that, but I think my initial impressions still got influenced by it some.
Now that I'm more used to the anniversary sound, I can listen "through" the weight a little better to the sound position behind them, and they sound more like they are actually coming from a similar place as the Qs. They are just bigger and more grounded and take up a little bit more space in the soundstage. BTW, bigger sounding instruments also usually means a slightly taller soundstage, and that's what I hear with the anniversaries.
So the Q701 can still give off the impression of having slightly roomier soundstage - the sounds themselves are a little smaller and have more "personal space" around them. The anniversary sounds are bigger so less free space in between the sounds. The Q701s also have more air in between sounds, where the anniversaries have a darker, blacker background. The Q701 sounds are lighter and have more of that "floating" quality, which is something a lot of K70x owners love. The anniversary just has more of a grounded quality to the sounds. Weightier sounds don't "float" as well!
BTW, I'm not just talking about gaming/dolby headphone, but stereo music as well...
Well, before I posted my initial impressions, so everything I said was fair at the time. I'm just letting you know my more recent impressions.
Edited by chicolom - 2/28/13 at 11:42pm