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The AKG K712 Pro Support and Impressions Thread - Page 160

post #2386 of 3450
Quote:
Originally Posted by wink View Post
 

There's also the fact that one person's opinion is that it sounds good, whilst another listening to the same setup will say that it's rubbish

Yet, both people listening to the headphones properly driven would say that it was great.


What the heck does that mean?  The whole point is "properly driven."  That doesn't necessarily mean super-low output impedance in every case.  If that were so, neither OTL or transformer-coupled tube amps would ever enter the picture with audiophiles.  Yet they do ... and literally prosper.

 

Technically speaking, it's possible to over-damp.  Every oscillating system will have a critical damping factor.  By definition of a critical point, that means there are scenarios on both sides that are not at the critical point.  IOW, there are under-damped and over-damped scenarios.

 

The entire race for a high damping factor pre-supposes the assumption that every single headphone driver will react the same to ever-increasing damping factors.  It may work in a lot of cases, perhaps even the majority.  Yet, it's also a bit like saying every headphone ever made is the same.

post #2387 of 3450
Quote:
Originally Posted by tomb View Post
 


What the heck does that mean?  The whole point is "properly driven."  That doesn't necessarily mean super-low output impedance in every case.  If that were so, neither OTL or transformer-coupled tube amps would ever enter the picture with audiophiles.  Yet they do ... and literally prosper.

 

Technically speaking, it's possible to over-damp.  Every oscillating system will have a critical damping factor.  By definition of a critical point, that means there are scenarios on both sides that are not at the critical point.  IOW, there are under-damped and over-damped scenarios.

 

The entire race for a high damping factor pre-supposes the assumption that every single headphone driver will react the same to ever-increasing damping factors.  It may work in a lot of cases, perhaps even the majority.  Yet, it's also a bit like saying every headphone ever made is the same.


I personally never found the output impedance to matter near as much as people make it out to be. I found as long as the amp gives them satisfactory power and has good synergy with the phone then that's all that really matters with amplification.

post #2388 of 3450

Apologies if this has already been posted (it's pretty recent): http://earmass.com/2013/11/24/akg-k712pro-the-wait-is-over/

post #2389 of 3450
There are times where I don't believe in damping factor but I do find IEMs, especially BA, tend to sound different with damping factor.
post #2390 of 3450

And headphones with impedance vs. frequency curves that vary wildly may sound different based on damping factor right? The K712 has an interesting graph that is relatively flat but then shoots up dramatically in the high treble.

 

http://www.innerfidelity.com/images/AKGK712.pdf

 

Anyway, I'm really excited to eventually get the Crack and experiment with all my cans. I expect the K712 to sound decent out of the Crack regardless but it will be interesting to see if there is any audible difference from my 0.1 ohm output impedance Lake People G109.

post #2391 of 3450
Quote:
Originally Posted by devhen View Post
 

And headphones with impedance vs. frequency curves that vary wildly may sound different based on damping factor right? The K712 has an interesting graph that is relatively flat but then shoots up dramatically in the high treble.

 

http://www.innerfidelity.com/images/AKGK712.pdf

 

Anyway, I'm really excited to eventually get the Crack and experiment with all my cans. I expect the K712 to sound decent out of the Crack regardless but it will be interesting to see if there is any audible difference from my 0.1 ohm output impedance Lake People G109.

I did a comparison the first time I got my Annie between E07K and E09K. Both sound similar. Treble don't seem to change either but the E09K do sound better due to more power :)

post #2392 of 3450

is the Portaphile 627x any good to be used with the AKG K712?

 

if not would you recommend one to be used with that HP.

 

Thanks

post #2393 of 3450

Thanks everyone for the advice on getting the K712. They simply rock!

post #2394 of 3450

Just got my K712.  Anyone else had issues trying to remove the stock cable?  I'm afraid I'll break it if I push in the button and tug any harder.

 

Bill

post #2395 of 3450
Quote:
Originally Posted by heyodee View Post
 

Thanks everyone for the advice on getting the K712. They simply rock!


Did you post a personal review somewhere? Don't be shy ;)

post #2396 of 3450
Quote:
Originally Posted by musiclife View Post
 


Did you post a personal review somewhere? Don't be shy ;)

 

You are too funny. But Eventually.

post #2397 of 3450
Quote:
Originally Posted by wgb113 View Post

Just got my K712.  Anyone else had issues trying to remove the stock cable?  I'm afraid I'll break it if I push in the button and tug any harder.

Bill

Hello Bill! I'm Bill (some of my friends calls me Bill)! Nice to meet you! tongue.gif

To remove the cable from the K712 itself, takes a lil force. I recommend not to keep on removing them too as it may damage the connect smily_headphones1.gif

Billson
post #2398 of 3450

The orange cable that came with my K712 snaps in and out really easily. The coiled black cable, however, is as you describe. It feels like it shouldn't take so much force to insert and remove it. Just be careful while you're doing it.

post #2399 of 3450
My Annie requires a lil force... Or am I just over reacting xD
post #2400 of 3450

ugghhh I want these. I am becoming a soundstage head and I think these will do the trick. I know they are wide but do they have depth?

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