This is a very accurate description of the two, for those who are wondering how the two compare.

No. The Q701 with bass mod has more bass than stock K7XX at least out of the box.   ****EDIT***I re-bought the Q701 back and I may have to reassess my statement regarding the bass. 

I find the bass a bit weak but getting better with more play time. I am afraid if I do the bass mod on the K7XX then the bass will be too much. The bass on a modded Q701 is just about right. I use Fiio E12 and also have O2 on order from Massdrop. I will keep using the K7XX for a few weeks and...

I listened to the K7XX for a few hours I concur with most but not all of your findings. I K7XX is laid back headphone. Highs are smooth and enjoyable to listen to. I do find the soundstage narrower than that of the Q701 though.   I was surprised that the bass on stock K7XX was lighter that the...

I will let you know once I have some playtime with the K7XX. I have already returned the Q701 so I won't be able to do any AB comparison, but the Q701 is still fresh on my mind.

Cheater!

I find the Q701 to be bass shy when I first got them. I did the bass mod and got just the right amount of bass that I like. I don't think I will need to do that with the K7XX, but we will see. I also found that the Q701 needs a good amount of play time to settle down.

Already sitting on the porch waiting for the fellow in brown   I agree, the soundstage a bit too wide at times, but this works very well for movies. I am willing to give up some soundstage for better bass, smooth treble, comfy ear pads and headband. I think the KXX7 will give me all that and...

Mine is scheduled for delivery today. I hope the soundstage is as wide as the Q701.

Very true indeed! The thing is it is very hard to convince those folks to look at it the other way around.

$849 for a headphone amp? While I never spent nor will spend that much on a headphone amp, I have spent thousands on speaker cable and interconnect only to find that the cheap ones are good enough. I upgraded my home theater amp from a $500 amp to a $3500 amp, my front end processor from mid-fi...

Even though I have the Fiio E12, I did also jump on the O2 drop.

Yes, the Q701 is a bit treble heavy. I hope that the K7XX, while correcting this, didn't take away that wide soundstage I came to really appreciate in Q701. It does wonders for movies.

I disagree. Have you listened to a DT-880 without amp? Amp is required to get decent volume out of these cans. All the attributes you listed, bass extension, wider soundstage, nice clear highs are minor improvements, which by the way you would not get, unless your source or amp can drive your...

I don't have the K7XX yet but I made my decision to buy one based on my Q701 experience. The Q701 has wider soundstage and has that airy 3D presentation, and has better mid-bass than the DT-880. The bass on the DT-880 might extend lower but you need to crack the volume way up and have a powerful...