Thanks for the help with the quote loop hole!
Quinto, I can only give you a preliminary opinion, I have 12 years of listening to the 501s and about 4hr on the 712s haha, I did A/B them today after taking those photos. I had listened to the K/Q 701 in a quiet room when I visited Japan earlier this year, and they just sounded sterile (I guess? Can't really pinpoint it.. I just didn't feel em) to me. As I said, I have listened to the HD800/T1/LCD2/etc. and they just didn't scream "you MUST buy these your 501s just don't do it anymore" (ok the HD800s almost did, but the cost/gain for me isn't worth the asking price).
I WAS looking for something different and more lively than my 501s though, they aren't going anywhere. I really thought that something like 650s would do it but they come off as too aggressive for my tastes..... when I read about the Aniversary models and the k712, I figured a more "lively" AKG would do it, and so far I think that's just what I needed. These will be used at work after all, I do more critical listening on my bigger stereo setup.
So as to what I found in my short A/B test today. Well the k712 does have a bit more low end, no surprises there. The 712 really does seem to give you what's in the recording.... if the recording has some sibilance, you'll get some sibilance. This is a good thing to me, my philosophy on audio is that I want to hear what the recording engineers heard. I find the overall balance fair, these still don't have "gobs" of bass but I obviously haven't wanted for it these past 12 years. Where I was most impressed was during a drum roll in a song (forgot what one lol).... there was more impact coming from the toms then I was expecting.
How the k501 compares was pretty interesting to me. There was more instrument separation, for instance I was listening to a Stevie Ray Vaughn track and when I switched from the 712 to the 501, I was hit with the organ, I thought to myself "oh there's a Hammond organ there, I totally didn't notice it in the 712!". I also felt things like snare drums had more "snap" from the 501. The delivery in the midrange and highs really seem smoother on the 501 to me at this point. Silky smooth and non fatiguing. Like, I don't think fatigue will ever be an issue with the 712, but.... well I could (and have) had the 501s on my head for over 8hr at a time and my ears/mind/soul never feel tired. Ever....but the "more lively" k712 might not be so kind for a marathon like that.
I don't know if those insights will mean much to you. Audio is so personal to me, I never felt like arguing about it got you anywhere.... we hear what we can hear. I'd give you thoughts on sound staging but I have a hard time with that in headphones, I feel like I've spoiled myself years and years ago listening to B&W 801s in a properly setup and sound treated room. I'll never get that close to hearing a full size grand piano in front of me out of a recording.... I don't have the money or desire to build a purpose built room like that.... but knowing what you CAN achieve is pretty amazing.
Edited by Muinarc - 10/12/13 at 2:14pm