Hi dleblanc343
I'm psyched you resurrected the thread, because actually I found my perfect headphone: the K702. Here's some info I posted in another thread about my impressions of the differences between the K702 and the K701 (and DT880/600) a few months back. It's a little long, but hopefully, enjoy.
Another member asked me to be specific about the sound of the K701, and the specific differences between it and the K702. Based on my fanatical love for the cans and my extensive listening with many amps, here are my opinions:
We all know that the K701 specializes in super-wide soundstage. That's the bottom line. That's what they're famous for, and for good reason. Right out of the box, (if you power them with a good quality amp), you'll be rewarded with huge soundstage, and really awesome instrument separation, in comparison to most other headphones. Some think it unnatural, but I really love it, and it sounds the way music is supposed to sound, to my ears. A long break-in period helps them to relax and soften up, eliminating the "plasticky" sound they have fresh out of the box, and making them sound warmer and softer, and less analytical, which is a common complaint about the headphones. Again, this goes away after several hundred hours of break in.
I listen mainly to Vocal Trance when I listen to headphones. It is extremely complex music, with many individual layers all dumped on top of each other. With any other headphone, even the DT880/600, the many layers and effects can get plastered together when things get complex, resulting in a muddy sound in some passages/frequencies. When this occurs, you lose a lot of the special effects present in this type of music.
This never happens with the K701. It has an airy, spacious sound, with an ultra-broad soundfield and perfect balance. The highs are also wonderful. It is a bit on the treble side which I like, but without being sibilant or shrill in any way in my opinion, and I'm pretty sensitive to that kind of stuff. (For example, I can't even listen to a DT880/32 even with a high quality amp, because of it's shrillness).
Where the K701 lacks, to most people, is that the bass is not very punchy at all. It does go very deep! You will hear very low lows produced very well, better than a DT880/600 for example but without its punch. But similar to the ER-4, the bass simply has little impact or "pow" effect. It's blended well into the rest of the frequencies, but lacks excitement. This is perfect for me, because as you know Trance has tons of bass and I get sick of it, plus I have hearing damage which starts my ears ringing when the bass is too strong.
The other area, which really
does matter to me, is the vocals. Contrary to what you've heard, I don't think the K701 emphasizes vocals, and in fact they are a little recessed. Another member suggested that they are simply blended well into the music, and that may be. However, when you listen to a DT880, M50, AD2000 or HD650, for example, you'll notice that the vocals are very close to your ears, and very intimate. I really like that, especially with Vocal Trance as it focuses on female vocalists who are all extremely talented. The big drawback of the K701 for me, was that it loses the intimacy of the vocals. The vocals are all produced very well, but are too far away for my tastes. A small but important thing as well, is that the pads of the K701 to me are very uncomfortable. And my pair, at least, had very weak clamp so that I had to tie it on my head with a headband every time I laid down with it. Annoying.
Now, the K702 improves on those two main things, the bass and the vocals, not a lot but definitely enough to make all the difference. The bass has more impact, and the vocals are more intimate. Again, not enough to really change the nature of the AKG K70x sound, but enough to be a definite improvement which makes all the difference for me. I no longer miss those things now that I'm listening to the K702, like I did when I owned the K701. The compromise of a headphone sound signature that I love, with all the special qualities I adore (soundstage, separation), and a little less impact on bass and little less intimacy on vocals that I'd really rather have, works for me with the K702.
While I went looking for a better headphone with the K701, I'm happy and domesticated with the K702. In addition, the pads are firmer and more comfortable, which I think is why the sound is different. ( I tried my K701 cans with a K601 pads, and they sounded terrible, so I learned a lot about how pads can change the sound). And, the clamp is far better. It holds on my head, while remaining very comfortable.
Make sense? If ultimate soundstage, separation and clarity are what you value, and you're OK with a more airy and treble sounding headphone without huge bass impact, then the AKG K702 is your headphone, hands down. I've found nothing at all in the sub-$600 range that compares to it.
(The DT880/600 for example was awesome, had far more bass impact and vocal intimacy, but again got muddy in more complex passages and did not have that amazing spacious soundstage which I love with Vocal Trance. The ER-4 in comparison has a very similar sound, with a good soundstage and no muddiness, and more intimacy on vocals, but the AKG just takes it all to another level. It's unparalleled and amazing. Every listening session is like an
experience. Every day I look forward to my listening session that night, and sometimes I literally jump out of my skin with excitement at what I hear.
My amps for the year I've owned the two were a Glow Audio Amp One tube amp, and a BSG CMoy solid state portable. Today they are the BSG and a little Millet Starving Student tube/hybrid). In my opinion, the K70x series functions best with a quality tube amp. I always have problems with hum, so I attach a 75 Ohm resistance cable that came from Etymotic, and it solves the problem with my BSG and Millet. For my glow, I attached a 235 Ohm cable and that solve the issue there.
Hope this was helpful and enjoyable for you, dleblanc343, and everyone.