For those who like to see the frequency response, here you are:   Sony MDR 1R Mk2 Source: http://en.goldenears.net/28027     Comparing with Sony MDR 1R Source: http://en.goldenears.net/15436     It seems that 1R Mk2 has a flatter response around 300-500 Hz and slightly higher...

Is there any guidelines on how to wash those pads while not damaging it? I am not sure what kind of material inside the pads, not sure if using some detergent or shampoo will cause something bad to the foam inside the pads.

  May I know how to get this raw results? I cannot find the link in Headroom to get this data. I would be glad if somebody can point me to the link. Many thanks! 

  I am referring to this document  http://www.akg-pro.ch/files_ap/AKG/Produkte/K702%2065th%20Anniversary%20Limited%20Edition/akg_k702_65th_anniversary_limited_edition_katalog_de.pdf   Since it didn't mention K612 Pro is made in Austria, so I assume it is made in China. Maybe I am wrong...

I think it should be genuine.     Watch this youtube clip at HD quality and stop at 9:02, I think it looks the same as your card with Chinese words. http://www.youtube.com/watch?v=VinFvYUAG98     The same goes for this video http://www.youtube.com/watch?v=THhGvewEo5M Watch at full HD...

  Ya, I agree with you, I think that the SRH1840 do looks more professional to me.

  That Shure SRH1540 with a carbon fibre design does looks very sexy~  One thing I like about closed back headphones is that I think their bass impact and slam is slightly better than open back headphones. 

  K712 is a balance sounding headphone, with emphasis on the mid range. One reason I bought K712 is because personally I like mid-emphasize headphones. The mid range of this headphone will sound more intimate.   It is not thick sounding, instead it sounds very airy.

  I think is quite nice, so far very satisfied with it.    This is a balance sounding headphone, so I think the bass is just nice, not too strong, not too weak. But if you compared to bass heavy headphones (such as Sony XB500 I am using), it definitely have less impact.   So far I didn't...

  I bought the Fiio E17 and AKG K712 Pro.  

  Audinst HUD-MX2 is also a good budget dac/amp. Although I never pair them with X1 before, but i think it is worth considering due to its budget price.

  Can you please share the youtube link? 

By the way, I am just wondering why AKG has taken down the K812 commercial video on AKG official Youtube channel, which was previously available on Youtube for a short period. I really want to watch the K812 video again.... 

  I would be glad if you could bring your camera as well~~ I am really looking forward to see more photos of the K812....

              Thanks tdockweiler for the impressions! Some of your words like shown above have motivated me to purchase the K712 and give it a try~~