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AKG K601 & K612 Pro Owners... UNITE!! - Page 88

post #1306 of 1499
Quote:
Originally Posted by jbarrentine View Post
 

They seemed empty. There wasn't a whole lot of body. I didn't feel engaged. Really I just wanted something more laid back and flatter than my T90, but the performance difference was far too wide to be ignored. Not that I thought they could approach the T90 anyway, but I was expecting more at the price point. 


That sounds like an amp synergy issue more than the headphone not being good enough quality because I have experienced what you are talking about before on the K612, they are very picky headphones and it can take some work to get them to sound right. Because with the right synergy the K612s are very dynamic and have plenty of body. They need an amp with the right synergy to sound right, specifically something with powerful dynamics, otherwise they sound undynamic and lacking body. The HD 600 on the other hand isn't near as picky but they do scale up well. What were you amping them with?


Edited by kman1211 - 7/4/14 at 7:09pm
post #1307 of 1499
The HD600 is more 'flattering' by comparison. It doesn't seem to show flaws as easily and isn't quite as fussy about source an damping.

Certainly, if the amp isn't robust electrically, the K601 does go thin and edgy sounding.

I have an amp that can be adjusted to a higher output impedance and at 120 ohms output, the headphone mellows just a fraction more without having to replace the pads which imo makes it sound not quite as good in terms of neutrality. It also measures 'off' with changed pads, but the sound becomes thicker which many people prefer.

I like the K612 so much that I think I may go for a K712 or even ultimately, an 812 although I feel that £1000 for a headphone is becoming way too much to pay.

When I first heard the K601, I felt the same about its tonality until I changed the amp.
Edited by iancraig10 - 7/5/14 at 11:50am
post #1308 of 1499

I have a hard time believing a Vali can't drive a k612 well enough.

post #1309 of 1499
Quote:
Originally Posted by jbarrentine View Post

I have a hard time believing a Vali can't drive a k612 well enough.

It most certainly should.
post #1310 of 1499
Quote:
Originally Posted by jbarrentine View Post

I have a hard time believing a Vali can't drive a k612 well enough.

It's not about how much power the amp has, it's about synergy. I haven't heard the Vali with the K612, so I can't comment on that pairing. I thought the K612 sounded bad on my Magni, rather lifeless and dull and that was my most powerful amp in terms of current. Yet on the EF2A and E12 it sounds great, especially on the EF2A and it's my weakest amp in terms of current.
Edited by kman1211 - 7/5/14 at 9:01am
post #1311 of 1499
Quote:
Originally Posted by kman1211 View Post

It's not about how much power the amp has, it's about synergy. I haven't heard the Vali, so I can't comment on that pairing. I thought the K612 sounded bad on my Magni, rather lifeless and dull and that was my most powerful amp in terms of current. Yet on the EF2A and E12 it sounds great, especially on the EF2A and it's my weakest amp in terms of current.

The problem with amp/headphone synergy is it's such a personal thing. I think it rarely works to buy based on someone else's pairing preference.
post #1312 of 1499
Quote:
Originally Posted by cel4145 View Post

The problem with amp/headphone synergy is it's such a personal thing. I think it rarely works to buy based on someone else's pairing preference.

That is true, it's usually best to chose a headphone based on how it sounds to them on their own gear.
post #1313 of 1499

I love the K612 a lot, really.

Though the slightly nasal lower treble is bothering me more and more.

They're amazing headphones nonetheless, they do much good and little wrong....

Still, a comparison to the HE-560 will be very interesting!

post #1314 of 1499
Quote:
Originally Posted by conquerator2 View Post
 

I love the K612 a lot, really.

Though the slightly nasal lower treble is bothering me more and more.

They're amazing headphones nonetheless, they do much good and little wrong....

Still, a comparison to the HE-560 will be very interesting

 

I am interested in how they compare to the HE-560. I found the only way to solve the nasal lower treble is with the right synergy, can take a lot of work though. I've managed to get a better synergy with K712 on my amp/tubes though, only catch with my current setup on the K712 is that the treble is really dark treble(at least that treble spike is gone) but I gain a pitch black background, bigger soundstage, better imaging, more forward mids(slightly recessed on the K712), greater transparency in the place of much treble presence. I'm planning on getting the Project Ember here in a couple months, it's supposed to pair amazingly well with AKGs and planars.


Edited by kman1211 - 7/7/14 at 11:43am
post #1315 of 1499
I use the Ember with the k612 and can confirm that it is indeed a great match. I have the output impedance set at 100 ohms which slightly smooths the top and you get a lovely 'rubber band' bass.

It has oodles of power so you end up with a very smooth and dynamic headphone without playing around with pads and altering other parts of the spectrum. The K612 retains its razor clarity with a slightly warmer sound.

If you visit DIYAH, you'll find Solderdude, who designed the amp. He is a mine of information and also designs filters that take peaks down on many headphones. Each filter is designed for different headphones and they really do work well.

Really worth doing.
Edited by iancraig10 - 7/7/14 at 2:00pm
post #1316 of 1499
Quote:
Originally Posted by iancraig10 View Post

I use the Ember with the k612 and can confirm that it is indeed a great match. I have the output impedance set at 100 ohms which slightly smooths the top and you get a lovely 'rubber band' bass.

It has oodles of power so you end up with a very smooth and dynamic headphone without playing around with pads and altering other parts of the spectrum. The K612 retains its razor clarity with a slightly warmer sound.

If you visit DIYAH, you'll find Solderdude, who designed the amp. He is a mine of information and also designs filters that take peaks down on many headphones. Each filter is designed for different headphones and they really do work well.

Really worth doing.


That's good to hear, sounds like it's the amp I should get then, from what I read it seems like a solid upgrade as a hybrid amp from my EF2A. I am also considering the Valhalla 2 but it's too new so I have to wait for reviews and I don't know how it pairs with what I have. I have heard great things about the Project Ember and the K712, good to hear the K612 does well as well, I have noticed the K712 and K612 sound good on the same amps given my experience though they seem to like different tubes more on my main system. I'm really missing my K612 as well as my HD 545, been away from them for like a month, all I have on me is the K712 and my brothers MA900 but the MA900 lacks refinement, it's grainy, and it's background isn't black enough so I can't really listen to it anymore. Do you use the stock tube or did you roll the tube? If so, what tube?

post #1317 of 1499
I've rolled a few tubes in and out since no set up procedures are necessary and it's really easy. In the end, I left a 'Bugle Boy'? In it. I also like the 6n series of tube. (Eb). Funnily enough, it is a diddle to play around with tubes with no fuss, but I've tended to stick with just a few rather than buy loads of tubes for it.
post #1318 of 1499
Quote:
Originally Posted by iancraig10 View Post

I've rolled a few tubes in and out since no set up procedures are necessary and it's really easy. In the end, I left a 'Bugle Boy'? In it. I also like the 6n series of tube. (Eb). Funnily enough, it is a diddle to play around with tubes with no fuss, but I've tended to stick with just a few rather than buy loads of tubes for it.


I have read the Bugle Boy tubes are good. I ended up sticking with three sets of tubes on my EF2A, stock tubes are never used. My Siemens goes amazingly well with the K612(very transparent the headphone just disappears with these tubes even when sibilants show and it's no slouch in dynamics) the HD 545 sounds good on these too, sadly the K712 slightly lacks transparency and is a bit hazy sounding on these tubes. The GEs goes very well with the K712 if only it had a little more treble and punchier dynamics it would be perfect. And my RTC tubes goes well with all three of my headphones but is slightly grainy in comparison but by far the most musical and addicting. I personally rather just stick with 2-4 different tubes at max, more than that is too much to deal with imo.


Edited by kman1211 - 7/7/14 at 10:34pm
post #1319 of 1499
Continually changing tubes and not settling with the sound possibly means that perhaps people aren't happy with the amp they're using. You can end up running in ever decreasing circles, only to find that the first one you tried is perhaps the best one, when you return to it!! I've kind of settled with my little bugle tube and accept it as a very good sound. Not really that curious about other tubes if I'm honest.
post #1320 of 1499
Quote:
Originally Posted by iancraig10 View Post

Continually changing tubes and not settling with the sound possibly means that perhaps people aren't happy with the amp they're using. You can end up running in ever decreasing circles, only to find that the first one you tried is perhaps the best one, when you return to it!! I've kind of settled with my little bugle tube and accept it as a very good sound. Not really that curious about other tubes if I'm honest.


Edit:

Well I just went back to my first pair of NOS tubes the RTC's since I barely used them since about a month before getting the K712 and my new DAC. And you are right the first one tried is probably the best because it seems to be the case with me as well. There is a huge difference in the depth and dimensionality of the sound the other tubes can't even compare to, there is much more of a roundness to the sound as well and it's by far the most dynamic sounding with big and powerful dynamics with a lot of tactility, almost to the point it's too dynamic. It also has the best tonal balance. The K712 no longer sound somewhat underdriven like they did on the other tubes or my E12. Now to test it with the K612 this weekend.


Edited by kman1211 - 7/8/14 at 4:01pm
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