My K 702s just arrived. Unless your tastes are completely different from mine then I think you made a very good purchase.
I heard all about how you have to break these in before they sound good and how the headband is terrible etc..
All lies... I just ran through various stuff from Stravinsky's Rite of Spring to my beloved '80s synth collection and these sound like $300 headphones right out of the box. If they do get better with time then that is just a bonus.
Maybe people do have trouble driving them and get a thin harsh sound, but I'm avoiding any chance of that by running them from my integrated pioneer. I don't use any of the portable/fiio stuff. 20% volume is all I can take on this amp. I will try them on lower ohm stuff later. I'm retro.
The headband is comfy, but I have longish hair so maybe it feels different on guys with short hair. The ear pads are the most luxurious I've encountered.
The bass is NOT weak, but its definitely AKG's signature old-school bass which is not a lingering, shakey '90s-2000s bass and more of a tight '80s bass that hits and runs.
I'm starting to think "weak bass" on headfi means powerful, precise bass and "basshead can" means floppy distorted enclosed woofer sound.
Take a K 240's bass levels but take away the papery, slow sound and add some much needed sub-bass and you have these. Over 3 times the price, but truly 3 times the SQ as well.
Also, unlike the 240, these can handle EQing. I highly recommend you experiment with an EQ on the sub bass frequencies because these can be equalized up to Q-40/HFI-580/XB__ bass levels while retaining clarity then at the flick of a switch drop back to studio flatness. Unlike some other "flat" headphones, they don't fall to pieces when you color them yourself.
They sound like open-backed SRH840s kind of, which is a big compliment from me. Just like the 840s they seem to adapt to the genre you're listening to so there's ample bass on electronica but it goes away on rock and classical.
They're extremely "punchy". Snares, bass, etc., all seem to "hit" rather than fade in. Perhaps this is the harsh, videogamey treble some people hear? To me it sounds like precision. My Ultrasones had HARSH treble, these just have what I would refer to as percussive treble.
So either I got the world's only pair of K 70X with strong bass and balanced treble, or they just go good with the warmth of my amp, or I'm just crazy?
My initial impressions rating: 10/10, pretty much perfect. Wow.
My only doubt is whether I should get the 701s instead. I didn't realize these were so blue in sunlight. The white version is more attractive IMO.
Edit: Tried them on 2 other sources now and still they don't have any harsh treble. They sound like a ruler-flat interpretation of the lightfooted AKG "house sound" to me. I guess I'm crazy.
Edited by machoboy - 9/25/12 at 5:43pm