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Author Topic: AKG K812 Measurements  (Read 27439 times)

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Sorrodje

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Re: AKG K812 Measurements
« Reply #120 on: January 28, 2015, 10:29:08 AM »

Definitive impressions (compared to the HD800)

 

- A bit warmer with a more downward FR ( This K812 has a close to perfect balance IMO)
- Very good soundstage less wide and deep than the HD800 but as holographic. Imaging is not near as good as the HD800 though. Both soundstages share the same diffuse and laid-back nature.
- Bass are less clean and precise than the HD800. That contrbutes to the warmth but the shortcoming is a slight boominess. very slight. I'm nitpicking here bit Hey we're talking about a TOTL 1500€ headphone.
- More sub bass than the HD800 . I really like the K812 with Electronic music.
- Issues in the treble. sometimes it's really annoying/fatiguing, sometimes not so. Depends on recordings. Overally I have difficulties with this treble and my mild Tinnutus increased after K812 listening sessions.
- Serious lack of dynamics (macro and micro dynamics)  so the K812 fails to suck me into the music compared to my Stax  or my HD800. I always need to crank up the volume without finding What I look for except harsher trebl. Besides the treble it's the biggest flaw of the K812 imo.
- Lack of dynamics induce a serious lack of resolution. K812 didn't offer me the same "true to life" feeling and level of engagement than my HD800 or even the Stax SR404.

I used my Octave/Sonett Rig mostly.

Not a bad headphone overally but not in the same league than the HD800 or my Stax SR404 and too expensive for what it offers. This AKG would be a very recommandable headphone at 6/700€.  I place it on par with the Beyerdynamic T1 although I much prefer the K812 for my personal tastes. I prefered the Ultrasone Edition 12 to both despite it's technically inferior and the Ultrasone is overpriced too.


Finally, I think that's a headphone for people who are focused on FR but forgiving about the lack of resolution and excitement and other more technical capabilities.  This AKG has a kind of "Lounge" sound as we speak of lounge music.  The perfect headphone for rich executives who are ready to spend lot of money in a classy headphone and who want to relax while they listen ambient music at low volumes directly from the HO of their macbook pro. I exxagerate but I hope that makes sense.

Not a bad headphone . Just Meh for people who are mad enough to look for an absolute sound quality. 

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Re: AKG K812 Measurements
« Reply #121 on: April 25, 2015, 09:27:38 PM »

What a piece of shit. I even tried a couple quick mod experiments, and it always sounds like ass no matter what. (Though I must admit, stock, it didn't hurt my ears as much as I expected it to...)

Quick measurement take of the left channel. That's all I care to do, and even that I was dragging my feet on.
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Bill-p

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Re: AKG K812 Measurements
« Reply #122 on: April 25, 2015, 09:32:07 PM »

Oh whao. It seems like the opposite problem from my LCD-2. I pushed the upper mids and upper treble too hard, but kept the ringing to a minimum.

This one is just like... too much ringing? I'm seeing resonance at... everywhere above 3KHz.

FR up to 2KHz looks good, though.
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thegunner100

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Re: AKG K812 Measurements
« Reply #123 on: April 25, 2015, 09:36:34 PM »

Damn... look at that CSD mountain!

I couldn't stand the K812 when I heard them at the Harmon store. I only listened to them for a few minutes to be polite to the really nice salesman :P
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Re: AKG K812 Measurements
« Reply #124 on: April 25, 2015, 09:38:19 PM »

This had a somewhat similar level of brightness as your modded LCD-2, at least the version I heard, but the LCD-2 sounded a whole lot more cohesive, faster, detailed, etc. Similar problems, just one that is "bright" and the other which is "garbage."

This just sounds like weird ass. I guess it sounds more spacious than your LCD-2? Haha.
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Re: AKG K812 Measurements
« Reply #125 on: April 25, 2015, 09:40:27 PM »

Admittedly, to my ears, at both times I heard the K812, the resonance caused a bit of harsh... or grainy kind of sound? But the balance was actually quite close to "neutral", whatever "neutral" means.

Now it'd be good to see how HD600 measures by Hans. I'd bet... 3-4KHz spike, but we'll have to wait and see. :)p1
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Re: AKG K812 Measurements
« Reply #126 on: April 25, 2015, 10:41:37 PM »

I have a lot of HD600 measurements floating around here already, though with my older mic (will primarily affect response beyond the upper mids or so). It showed a 2-4KHz rise, but one that was still in line with the bass. Just stuck out to me too much, personally.

Edit: Link for your convenience. My new mic would probably raise that 2-4KHz area a touch more, smooth out that dip, and bring the rest of the treble up a bit. And probably make the bass look a bit better extended.

http://www.changstar.com/index.php/topic,987.msg44781.html#msg44781
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Re: AKG K812 Measurements
« Reply #127 on: April 26, 2015, 03:53:14 AM »

Looks about right to my ears. Some of the most deafening/fatiguing treble I've ever heard. Couple that with mp3s that were claimed to supposedly be wav files by a certain Chinese vendor (not Hifiman) and it was just intolerable for me.
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wnmnkh

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Re: AKG K812 Measurements
« Reply #128 on: May 07, 2015, 04:00:11 AM »

My first preliminary impression on K812, in bullet points.


1) Diffused sound, which gives a big soundstage and sense of air.

2) The disadvantages of diffused sound are much less perceived detail, and it pretty much falls apart when a complex music is played.

3) Overall frequency response is very good, smooth and neutral.

4) There are some issues in treble area where it gives fatigue. After a while, my ears got used to it and I no longer have any difficulties, but this is certainly different with other people.

5) Overall, K812 works really well with very simple music (i.e female single vocal with one or two instruments) but really bad with complex music (i.e large classical)

6) It is not definitely worth it for 1400. With some reservations, I can say it is still probably the best-sounding AKG despite the flaw. But I may change my opinion on this. Still need to compare with K712  more.
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Colgin

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Re: AKG K812 Measurements
« Reply #129 on: May 07, 2015, 04:19:20 AM »

My first preliminary impression on K812, in bullet points.


1) Diffused sound, which gives a big soundstage and sense of air.

2) The disadvantages of diffused sound are much less perceived detail, and it pretty much falls apart when a complex music is played.

3) Overall frequency response is very good, smooth and neutral.

4) There are some issues in treble area where it gives fatigue. After a while, my ears got used to it and I no longer have any difficulties, but this is certainly different with other people.

5) Overall, K812 works really well with very simple music (i.e female single vocal with one or two instruments) but really bad with complex music (i.e large classical)

6) It is not definitely worth it for 1400. With some reservations, I can say it is still probably the best-sounding AKG despite the flaw. But I may change my opinion on this. Still need to compare with K712  more.

Nice impressions. Maybe I am not understanding what is meant by "diffusion" in a technical sense. The HD800 has huge soundstage yet no shortage of details.  is HD800 not diffuse. Can you have big soundstage a la HD800 without diffusion. Or does HD800 simply have some other magic going on to counter adverse effects of diffusion as you describe them.
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