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The AKG K712 Pro Support and Impressions Thread - Page 162

post #2416 of 3300
Quote:
Originally Posted by devhen View Post
 

Its been long enough that I feel comfortable in my knowledge of the K712's abilities enough to post a summary/review. I'll mainly be comparing them to the DT880 and HD600.

 

The K712 is a great headphone with a lot of strengths and a couple of weaknesses. How you feel about its weaknesses will determine how much you like the K712 IMO.

 

The positives:

 

The soundstage is very wide. Its pretty impressive and I really like it. However, it is no deeper than comparable open cans like the DT880 and HD600 which is unfortunate. The DT880 and HD600 (and similar open cans) already have decently wide soundstages so widening that without making it deeper kind of sounds slightly strange. I get the feeling that the depth should be more, in order to match the width, and that that would result in a pretty amazeballs soundstage that I wish I could experience.

 

The sound signature is fairly smooth with good extension at both ends. The bass is of quite good quality and is quite satisfying but it doesn't entirely escape the "plasticy" issue (more on that later). It is not over emphasized but not lacking and has a pretty good amount of very low end extension for an open headphone. For me the bass quantity is just about perfect.

 

Detail is pretty great on these. I get the impression that they have ever so slightly more detail than the DT880 and HD600 but its hard to tell if its "real" detail or just an effect of the emphasized upper mids. Every little thing is revealed in full light in that range. There's also a decent amount of treble (its not warm or rolled off in the treble to my ears) and there's a good amount of detail there as well. The bass is also pretty well textured with a good and satisfying amount of detail.

 

The comfort is awesome. However, I found myself being slightly bothered by the extremely low clamping force. I'm only ever bothered with it after medium to long sessions where they can feel too loose if I'm moving my head around at all. But its a fairly small gripe and they are definitely very comfortable and the memory foam velour pads are awesome.

 

Personally, I think they look cool. There's a nice matte finish on the orange accents that makes it look much less bright and gawdy than some of the pictures make it look. I really like the design and the color scheme, I think they did a good job on it.  Any more orange and I probably wouldn't like it as much but they struck a good balance.

 

The fact that it comes with both a long straight cable and a shorter coiled cable, and that they are detachable, is definitely worth mentioning IMO. I wish this was a standard for all mid- and hi-end phones.

 

The negatives:

 

1- Tonal accuracy

2- Fatigue

 

The boosted upper mids of the K712 doesn't do the tonal accuracy any favors. They have a "plasticy" sound to them. Tonally the DT880 and HD600 are both clearly more accurate though its not a huge difference.

 

The boosted upper mids again cause the second problem-- fatigue. In terms of fatigue, the K712 is more fatiguing than the DT880 and much more fatiguing than the HD600.

 

For me, fatigue level and tonal accuracy are pretty high up on my list. As such, overall, I consider the K712 inferior to both the DT880 and HD600 and I use them less than I do those cans. Based on the asking price of the K712 when they first came out you would assume they are an obvious step up from headphones like the DT880 and HD600 but they aren't. They are very good and are worth the price IMO, and many will prefer them to the DT880 or HD600 and/or consider them technically superior to those cans in one way or another, but I do not think its accurate to say the K712 is in a different league from the DT880 and HD600. They are most certainly in the same league and it will come down to preferences.

 

That's all I can think of at the moment. I'm happy to answer any questions. Overall I do like the K712, quite a bit, but I prefer the DT880 and HD600 and use them more often than I do the K712.


I did hear some oddity in the upper mids and I did find them a bit fatiguing when I listened to them. After listening to them, it eliminated any desire for me to get them as an upgrade from my K612 as I found the K612 more tonally accurate and less fatiguing than the K712, I just wish the K612 had a detachable cable. I do want to try the K712 on more systems and see if it was simply a case of synergy that isn't ideal before coming to a concrete decision about them.


Edited by kman1211 - 12/21/13 at 11:07pm
post #2417 of 3300
Just mod them! smily_headphones1.gif
post #2418 of 3300
Quote:
Originally Posted by Ashade View Post

Just mod them! smily_headphones1.gif

 

Probably a bad idea since the modded Q701 itself with K712 pads has way too much bass (IMO). It was kind of nice, but then it just ruins some songs.

post #2419 of 3300

I ordered these from RazorDog Audio while they still had the 25%-off discount (which is code razor712, btw) and they just arrived today. I've been looking for a particular type of sound for certain music genres and figured they'd be a good fit.

 

I'll start by saying that I've owned a few of the K70x-series headphones over the years—the original K701, the original K702, and the K702 65th Anniversary. Never really thought that highly of any of them, even the K701 which I used with the most number of different amps (solid-state, hybrid, & tube).

 

My initial impression of the K712 was more of the same K70x sound and I wasn't impressed at all. In fact I was almost getting ready to send them back.

 

That is, until I decided to do something a bit different. I have a review unit of the Garage1217 Project Ember here with me at the moment. I was using the stock 6N1P tube with the K712 at first and tried out the Low, Mid, & High output resistance settings, none of which really improved anything. So I rolled in a different tube, a 12AX7VKA, and left the amp alone powered on, but not actually in use playing music, to "warm up" the new tube for a bit. A few hours later I came back to test it out.

 

My reaction now to the K712 in the re-configured Project Ember w/ the 12AX7VKA at Mid output resistance (35 Ohms) is HOLY CRAP! I don't think I've ever heard an AKG K7xx headphone sound this good before! No it's not at the level of the HD800 or LCD-2/LCD-3, et al. It's actually better, and I mean that seriously! For the price that I paid, heck even at the $500 MSRP, it's awesome-sounding that in a lot of ways eclipses the HD800 and Audezes! I honestly can't believe how good the K712 is and it totally puts the other expensive flagships to shame. Easily. And when it's a fraction of their price that's an insult!

 

I pity those who are going to under-drive the K712 and won't hear its potential. Because my other amp, the HeadAmp Gilmore Lite, totally and obviously under-drives it. The K712 sounds like a joke on it. But it sounds great, borderline amazing, on the Project Ember where it's driven properly!

 

I used to be a non-believer of AKG's K7xx headphones but the K712 has swayed me back. It's really good and makes sweeter music than any HD800 or Audeze, or any other dynamic or planar magnetic before it that I've owned/heard.

post #2420 of 3300
Ok.
post #2421 of 3300
Quote:
Originally Posted by Asr View Post
 

I ordered these from RazorDog Audio while they still had the 25%-off discount (which is code razor712, btw) and they just arrived today. I've been looking for a particular type of sound for certain music genres and figured they'd be a good fit.

 

I'll start by saying that I've owned a few of the K70x-series headphones over the years—the original K701, the original K702, and the K702 65th Anniversary. Never really thought that highly of any of them, even the K701 which I used with the most number of different amps (solid-state, hybrid, & tube).

 

My initial impression of the K712 was more of the same K70x sound and I wasn't impressed at all. In fact I was almost getting ready to send them back.

 

That is, until I decided to do something a bit different. I have a review unit of the Garage1217 Project Ember here with me at the moment. I was using the stock 6N1P tube with the K712 at first and tried out the Low, Mid, & High output resistance settings, none of which really improved anything. So I rolled in a different tube, a 12AX7VKA, and left the amp alone powered on, but not actually in use playing music, to "warm up" the new tube for a bit. A few hours later I came back to test it out.

 

My reaction now to the K712 in the re-configured Project Ember w/ the 12AX7VKA at Mid output resistance (35 Ohms) is HOLY CRAP! I don't think I've ever heard an AKG K7xx headphone sound this good before! No it's not at the level of the HD800 or LCD-2/LCD-3, et al. It's actually better, and I mean that seriously! For the price that I paid, heck even at the $500 MSRP, it's awesome-sounding that in a lot of ways eclipses the HD800 and Audezes! I honestly can't believe how good the K712 is and it totally puts the other expensive flagships to shame. Easily. And when it's a fraction of their price that's an insult!

 

I pity those who are going to under-drive the K712 and won't hear its potential. Because my other amp, the HeadAmp Gilmore Lite, totally and obviously under-drives it. The K712 sounds like a joke on it. But it sounds great, borderline amazing, on the Project Ember where it's driven properly!

 

I used to be a non-believer of AKG's K7xx headphones but the K712 has swayed me back. It's really good and makes sweeter music than any HD800 or Audeze, or any other dynamic or planar magnetic before it that I've owned/heard.

 

I always thought when an AKG has an ideal synergy behind them they are truly a treat and pleasure to listen to. They are so musical and engaging with the right system and some reason I find the systems that really bring out that musicality also bring out more of an AKGs refinement and resolution. I have noticed when I heard the K712; it does sound a bit different than the other K7xx series, I want to hear their full potential some time as I think the system I heard them on wasn't ideal. My K612 on my system awes me all the time they sound so real and musical, they just became so good after I changed tubes on my amp.


Edited by kman1211 - 12/22/13 at 1:19am
post #2422 of 3300
Ha, I just ordered the K712 and am planning on getting the Project Sunrise in the near future. I'll have to grab one of those tubes and give it a go.
post #2423 of 3300
Quote:
Originally Posted by Asr View Post
 

I ordered these from RazorDog Audio while they still had the 25%-off discount (which is code razor712, btw) and they just arrived today. I've been looking for a particular type of sound for certain music genres and figured they'd be a good fit.

 

I'll start by saying that I've owned a few of the K70x-series headphones over the years—the original K701, the original K702, and the K702 65th Anniversary. Never really thought that highly of any of them, even the K701 which I used with the most number of different amps (solid-state, hybrid, & tube).

 

My initial impression of the K712 was more of the same K70x sound and I wasn't impressed at all. In fact I was almost getting ready to send them back.

 

That is, until I decided to do something a bit different. I have a review unit of the Garage1217 Project Ember here with me at the moment. I was using the stock 6N1P tube with the K712 at first and tried out the Low, Mid, & High output resistance settings, none of which really improved anything. So I rolled in a different tube, a 12AX7VKA, and left the amp alone powered on, but not actually in use playing music, to "warm up" the new tube for a bit. A few hours later I came back to test it out.

 

My reaction now to the K712 in the re-configured Project Ember w/ the 12AX7VKA at Mid output resistance (35 Ohms) is HOLY CRAP! I don't think I've ever heard an AKG K7xx headphone sound this good before! No it's not at the level of the HD800 or LCD-2/LCD-3, et al. It's actually better, and I mean that seriously! For the price that I paid, heck even at the $500 MSRP, it's awesome-sounding that in a lot of ways eclipses the HD800 and Audezes! I honestly can't believe how good the K712 is and it totally puts the other expensive flagships to shame. Easily. And when it's a fraction of their price that's an insult!

 

I pity those who are going to under-drive the K712 and won't hear its potential. Because my other amp, the HeadAmp Gilmore Lite, totally and obviously under-drives it. The K712 sounds like a joke on it. But it sounds great, borderline amazing, on the Project Ember where it's driven properly!

 

I used to be a non-believer of AKG's K7xx headphones but the K712 has swayed me back. It's really good and makes sweeter music than any HD800 or Audeze, or any other dynamic or planar magnetic before it that I've owned/heard.

 

A Gilmore Lite can't drive a K712 properly? I find this kind of hard to believe..the K712 isn't that power hungry. Doesn't that output like half a watt into 32ohm?

 

Even between the O2, iFi iCAN and my Headroom Micro Amp there is no massive difference and those are all pretty close to transparent IMO.

It does sound the best on the Micro and that thing has TONS of power. I do think battery powered amps are usually a fail with the Q701/K712 though. I haven't tried any of the new ones likes the E12 and C5 though.

 

IMO when any AKG is under-driven they're usually thinner and more tinny/harsh in the treble. To get this type of sound from my stock Q701 it takes one really awful amp. People say the Q701 and K712 are often fatiguing, but I never ever get this unless it's the recording's fault and even then this almost never happens.

 

 

On a transparent setup i've not found the K712 and (bass) modded Q701 to sound that much different. I'd say they're about equal. Q701 stock and K712 is a much greater difference obviously.

 

BTW not sure if you'd agree, but i've found the K400/K501 to be the hardest AKG headphones to drive.

 

I also wonder what you'd think of a K712 on an O2 compared to your Gilmore. IMO the O2 does a good enough job of driving the Q701. I felt the iFi iCAN was slightly better, but more closed in sounding.

post #2424 of 3300
Quote:
Originally Posted by tdockweiler View Post
 

 

A Gilmore Lite can't drive a K712 properly? I find this kind of hard to believe..the K712 isn't that power hungry. Doesn't that output like half a watt into 32ohm?

 

 

Or Asr didn't like at all the pairing and blame the gilmore to underpower the poor little K712 ?  :o

post #2425 of 3300
That's my assumption.

People equate a bad pairing with being underdriven half the time, which is just misinformation half the time.

Hell, I've underdriven some headphones that sound better than being well driven off the wrong pairing. It's rare, but it happens. Like using a Magni with a bright headphone.
post #2426 of 3300

Anyone know who sells replacement pads for the 712s, Google isn't my friend at the moment. Need to give mine a wash. Thanks.

post #2427 of 3300
Quote:
Originally Posted by stvn758 View Post
 

Anyone know who sells replacement pads for the 712s, Google isn't my friend at the moment. Need to give mine a wash. Thanks.

 

Frank at AKG has them.  Part no. 5021871

 

 

Spare parts
Frank Rodriguez frodrigu@harman.com 
Phone:  +1 818 920-3279

 

 

Be warned that you MIGHT not get the same K712 pads back, as the K712 and K702 Anniversary share the same part no. for pads but are slightly different.

 

Are your pads really dirty enough to need replacing already??  The K712 hasn't been out that long...

post #2428 of 3300
Quote:
Originally Posted by chicolom View Post
 

 

Frank at AKG has them.  Part no. 5021871

 

 

Spare parts
Frank Rodriguez frodrigu@harman.com 
Phone:  +1 818 920-3279

 

 

Be warned that you MIGHT not get the same K712 pads back, as the K712 and K702 Anniversary share the same part no. for pads but are slightly different.

 

Are your pads really dirty enough to need replacing already??  The K712 hasn't been out that long...


Thanks a lot. Mine feel like memory foam ones, not going to send the ones I have anywhere though, just need a wash. See if I can't buy a spare pair.

post #2429 of 3300

My advice is don't let it exposed to anything. Put it in a drawer xD

post #2430 of 3300
Quote:
Originally Posted by stvn758 View Post
 


Thanks a lot. Mine feel like memory foam ones, not going to send the ones I have anywhere though, just need a wash. See if I can't buy a spare pair.

 

Right, I'm saying if you BUY A PAIR, there is a chance the pads you receive might not be the same as the pads on your K712.

http://www.head-fi.org/t/659251/the-akg-k712-pro-support-and-appreciation-thread/1155#post_9729370

http://www.head-fi.org/t/582276/q701-appreciation-thread/4395#post_9920258

 

 

 

I think you should be able to wash them as long as you rinse them good and air dry them very well (set it in front of blowing fans). 

 

I would just wash them first.

 

 

 

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