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AKG K812 Pro - Page 157

post #2341 of 2900
Quote:
Originally Posted by TheManko View Post
 

Ok, so I’ve listened to the Nad C 375BEE now a bit with both the 812 and HD 800. As expected the high output impedance boosted the bass compared to the O2 and Essence III that have lower output impedance. It wasn’t as bad as I expected though with the 812. The HD 800 also sounded pretty good, though the Nad has a problem with background hum. With both headphones in quiet parts I could hear humming in the background, and it was actually worse with the HD 800 than the 812. When playing music the hum disappeared into the background.

 

It’s a good match with the HD 800 tonally. I can see why someone could be happy with this sound, apart from the obvious background hum between tracks. It produced a warmer sound than any of my headphone amps. The warmth was at the cost of resolution and focus in the midrange compared to my other amps. But it wasn’t a disaster by any means, so I say if you have this amp and you like how it sounds with your headphones, just keep using it!

 

Note that I’m using the Xonar Essence III as a pre-amp for the Nad, so it’s possible the background hum might be reduced if I was using the one the Nad comes with. The way I’ve decorated makes it inconvenient to squeeze in behind the amp to reattach the jumpers between the pre-out and main-in to test. I used to have Dali Mentor 2 speakers, and now I’m using B&W CM8 with a Velodyne sub. I’m very happy with how the combo sounds. The only problem with the Nad when using it with speakers is the built-in pre-amp which uses an idiotic volume scale. All the volume comes in the first third of the scale, so you have to touch the volume very carefully to not blow your ears out. Using the Essence III as a pre-amp is much nicer. Not only because it sounds better, but mainly from a practical viewpoint since the volume control isn’t as crude.


I wonder what is causing the hum. Could be a source/dac issue rather than an issue with the amp.

post #2342 of 2900

Thanks for the impression Manko

 

Yeah I'm surprised at the hum.. Hmmm...? It won't be an impedance mismatch because that would give you a hiss. Because I haven't tried any of the later NAD models I can't really add anything. Other than the earlier NAD's have a 20db mute that really helps with hp use. And they are known to have a completely black background as has been documented a few times on the vintage thread. The HD800 will always show noise more than most hp's because of the high sensitivity.

IME 'hums' usually come from the transformer and can be normal on older speaker amps. But it could also be a ground loop issue. Try unplugging one component at a time until it stops, if it doesn't stop then it may be something else in the house... Unplug everything! 

 

Last resort - turn the elec off at the trip switch. If it still hums then you have a problem :biggrin: Time to call Ghostbusters ha

 

Also, using any pre-amp can alter the sound significantly. You will basically have the sound of both amps. I would try the NAD on its own and if you can't get much room on the volume just lower your pc volume. (a little)  

post #2343 of 2900

Do you guys think the AKG K812 is an endgame headphone? (i'm thinking because of it's flaws, someone would probably buy a new headphone in a couple of years?)

 

edit: And how much better is the AKG K812 over the Shure SE846. I currently prefer listening to the Shure SE846 over all my headphones (while i bought these for portable listening) despite my open heapdhones having bigger soundstage, imaging and treble. So I need to have a new headphone at home :P


Edited by ubs28 - 5/3/14 at 12:31am
post #2344 of 2900
Quote:
Originally Posted by ubs28 View Post
 

Do you guys think the AKG K812 is an endgame headphone? (i'm thinking because of it's flaws, someone would probably buy a new headphone in a couple of years?)


With the right synergy I believe it is an endgame headphone going by my experience with them. One thing is that the best amps for the headphone haven't really been figured out quite yet like it has with other flagships such as the HD 800.

post #2345 of 2900
Quote:
Originally Posted by ubs28 View Post

Do you guys think the AKG K812 is an endgame headphone? (i'm thinking because of it's flaws, someone would probably buy a new headphone in a couple of years?)

edit: And how much better is the AKG K812 over the Shure SE846. I currently prefer listening to the Shure SE846 over all my headphones (while i bought these for portable listening) despite my open heapdhones having bigger soundstage, imaging and treble. So I need to have a new headphone at home :P

is there no way that you can get to hear these cans before you buy?
post #2346 of 2900
Quote:
Originally Posted by up late View Post


is there no way that you can get to hear these cans before you buy?

Unfortunetly not. No shop has the HD800 or AKG K812 as a demo unit. 

post #2347 of 2900
ok - k812 is easy to drive. hd800 not so much.
post #2348 of 2900
The K812 is easier to drive but the HD 800 wasn't as hard to drive as I expected it to be. The HD 800 is more picky than hard to drive.
Edited by kman1211 - 5/3/14 at 10:43am
post #2349 of 2900
didn't want to go there tbh but yeah the hd800's reputation for being source and amp dependant is pretty well known
Edited by up late - 5/3/14 at 5:53am
post #2350 of 2900

Who is disappointed with their AKG K812?  (if nobody is disappointed with them except Tyll, maybe i'll order it)

post #2351 of 2900
Hello my FRIENDS!

the K812 is a GREAT SOUNDING headphones!two Points that are not good FOR THIS 1500 USD FLAGSHIP MODEL First Point -the Build QUALATY of this EAR PADS is very bad and very cheap and Second Point in my opinion the WEIGHT is to HEAVY FOR A 1500 USD FLAGSHIP in Year 2013/2014!

ALL IN ALL a GREAT SOUNDING HEADPHONE and i love it realy but its not A ENDGAME HEADPHONE!(you will see that in the Future!)

NOMAX WILL BACK AT THE RIGHT TIME IN ANOTHER TREAD!

Sorry for my Bad english

REGARDS NOMAX
post #2352 of 2900
Quote:
Originally Posted by ubs28 View Post

Who is disappointed with their AKG K812?  (if nobody is disappointed with them except Tyll, maybe i'll order it

Almost all of them unsubscribed long ago, so the only way to find that out is to go through the thread. Most who left didn't actually dislike it: they simply think HD800 is better. The others outright dislike it, and they were usually kind about how they expressed that sentiment.
post #2353 of 2900
Quote:
Originally Posted by Claritas View Post


Almost all of them unsubscribed long ago, so the only way to find that out is to go through the thread. Most who left didn't actually dislike it: they simply think HD800 is better. The others outright dislike it, and they were usually kind about how they expressed that sentiment.

 

I was fairly disappointed in the AKG K812 but glad to see AKG re-entering the high-end flagship headphone market. I didn't think they were too bright, but didn't think they had the dimension that HD800s or HE-6s have. I like them a lot more than the T1 or LCD-2, but thought AKG could have skipped catering towards portable setups given that it's such a wide-open headphone. The headphone cable seems low-quality compared to most headphones in the price range and I think they could have either reduced the overall price or invested the cost related to the headphone stand into a better headphone cable, such as, a 4-pin balanced or nicely jacketed 1/4". 

post #2354 of 2900
Quote:
Originally Posted by Nomax View Post

Hello my FRIENDS!

the K812 is a GREAT SOUNDING headphones!two Points that are not good FOR THIS 1500 USD FLAGSHIP MODEL First Point -the Build QUALATY of this EAR PADS is very bad and very cheap 

What's wrong with the pads? Looks like a usual pair of pleather pads...

post #2355 of 2900
Quote:
Originally Posted by gabbadabbadoo View Post
 

 

I was fairly disappointed in the AKG K812 but glad to see AKG re-entering the high-end flagship headphone market. I didn't think they were too bright, but didn't think they had the dimension that HD800s or HE-6s have. I like them a lot more than the T1 or LCD-2, but thought AKG could have skipped catering towards portable setups given that it's such a wide-open headphone. The headphone cable seems low-quality compared to most headphones in the price range and I think they could have either reduced the overall price or invested the cost related to the headphone stand into a better headphone cable, such as, a 4-pin balanced or nicely jacketed 1/4". 

 

I would like to see philips build a high-end headphone. I've been very impressed with their latest offerings. The Philips Thread, S1 and S2 are all fantastic sounding in-ears to me. Very nice ballance of bass and clarity. The Fidelio X1 is also stupendous value for money, unfortunately for me it's too bass-heavy and not a "reference headphone". But for the money it's still ridiculously good. I would love to see what they good do with a $1000-1500 budget if they decided to make a "reference headphone".

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