Thank you again. Graph has been posted for the K702 65th Anniversary Edition 2014.   http://www.innerfidelity.com/images/AKGK70265thAnvEd2014.pdf   Also, there's a new graph for the K702 and now all the K70x family has been measured:  ...

Thanks. Pretty similar, wonder why my K712 are a little bassier than my K702 65th. Always tought the Annies were somewhere in between the K702 and the K712.

More than 3 weeks and still no graph. It's taking too long and I'm really curious about the k702 65th similarities and differences with all the other K70x family.

Why there's still no graph for the K702/65th?

My k712 and newer Annie have non-angled pads.

So, K7XX is chinese K712.

I fix it... Just opened part 21 and then tried to remove 23 unsuccessfully, but somehow I manage to fit better parts 23 and 20 together, now it doesn't make friction noise, apparently the union between them was responsible for the noise.

Did you manage to solve the problem? I've been experiencieng the same issue in the right eracup... I'm wondering if there's an easy solution.

I believe the K712 is more natural sounding than the K701 and K702, both of these old units were lacking the bass and sounded almost too bright, not a balanced sound in my opinion... The K712 with the 3db bass boost has now a more natural -speaker like- sound with just enough bass without having...

I think both perform really similar, and differences are subtle, with that in mind I have found the famous bass boost (3dB) more prominent in the K712, making it a bit darker than the K702/65th... I believe the Annie has a more defined bass by the way... Both are really detailed and balanced.

Ok, I really don't know if older Annies are darker, mine are late production unit and have the same pads that the K712, so maybe that makes them a little less dark... Maybe the new K7XX will be as dark as the older Annies as they are rumored to have older Annie pads... I'm really happy with my...

I find the K712 pro a little bit darker than the K702/65th, but both are still very natural-balanced sounding... Anyway, I agree, the HD600 were too dark for my taste.

Actually I find the K712 and K702/65th to have a more natural-balance sound... and they look better too.... and the K7XX looks awesome.

It is just a matter of personal taste, both deliver about the same sound quality... I prefer the K7 series sound, and I really like the added bass on the K712 and the K702/65th, if the K7XX turn to be like one of these, then it would be a really nice unit.

I don't understand either.

I also found the K702/65th to feel a little bit airy and brighter (without being harsh) when comparing them to the K712, that would be because of the added bass of the K712 I believe... Anyway, both headphones are slightly less bright than the K701.

Contact them, maybe they can tell you what is wrong and then you can see if it's worth trying to repair it yourself.

The 3db bass boost on the K7XX means that it will have 3 time (or 4 times?) the bass in the low frecuency range compared with other K70x models. Bass is around 20 and 320 Hz... Music below 20 Hz is not hearable and there's usually nothing recorded below 20 Hz in most music...

Yes, from experience... Theres more bass in the K702/65th than in the K701 and K702, but there is even a little more in the K712. Bear in mind that mine are a late production units, and the pads on both my K712 and K702/65th are the same.

I think you are right... And there's more bass in the K712 than in the K702/65th.

I sold my early K701 looking to upgrade to K702 65th Anniversary Edition or K712 pro, and now I have them both. I was looking for a bit (just a little bit) more bass for mixing and "mastering" purposes (I listen music with them at home too).   I found both the K712 pro and the K702/65th to...

You're right, my mistake, the voltage sensitivity is what AKG use in their specs now days, so the K70x voltage sensitivity in fact is 105 dB SPL at 1 Vrms. As I said, they will sound better with a decent amp... I never use them with mobile devices anyway, there are other...

I know AKG K70x are not the best headphones for mobile device use, but they are no the worst either, i found them somewhat in between... You're right, I assumed that AKG stated sensitivity as acoustic output as a function of input power, but I'm really not sure about that, I guess I'll have to...

We are talking about different but related things, voltage sensitivity is no the same as power sensitivity. Yes, power sensitivity of the K7 series is 105 dB SPL at 1 mV, but voltage sensitivity of the K7 series is around 117 dB SPL at 1 Vrms.   (By the way, Sennheiser HD 25-1 II have voltage...