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AKG K601 & K612 Pro Owners... UNITE!! - Page 64

post #946 of 2232
Quote:
Originally Posted by doraymon View Post
 

Guys while waiting to receive a test headphone amp, I stop worrying about specs, I put some good music and I am enjoying it! Maybe not as loud as I wanted, but these cans are amazing...

Just to share the experience I post a picture with all the "family" at work.

 

Whewy! That is a fine looking stack, headphones, and rack. 

post #947 of 2232

Thanks mate! :beerchug:

post #948 of 2232

I was thinking of washing my K701 pads, so I decided to put the stock pads back onto my K601 in preparation. I noticed a greater change in the sound than the last time I swapped them around (a long time ago now, perhaps even with my old amplifier), so I decided to test them again.

After a lot of listening with both, I've decided to keep the K601 pads on. My overall conclusion is that, to me, the K701 pads actually seem to give the K601 more of a closed sound. This would seem to make sense given that the K701 pads have stiffer internal foam (potentially reducing sound leakage) and are angled (making more of a seal with my head). When my computer is on and I'm not playing any music, the fan noise is slightly quieter with the K701 pads, which also agrees with this.

Whilst the angle of the K701 pads positions music more to the front of the field, I'm actually finding that the size of the sound-stage is reduced when compared to the K601 pads. There's more of an openness to the music when using the K601 pads, with a greater sense of space, and I generally prefer this trait. The prominence of the bass is increased with the K701 pads, however to me the pads seem mostly to boost the upper regions of the bass, making music sound more boomy. This boom can actually encroach on the mid-range if the music has particularly heavy bass, which makes things less engaging for me. Changes in treble have been harder to identify, though especially with recordings of a brighter nature, I think the K701 pads actually remove a bit of sibilance. It's possible the more open nature and reduced bass of K601 pads is giving me that impression though, but either way the difference doesn't seem as great as with the bass.
When you add all of these factors together, for me, a little of the K601's magic is lost when using the K701 pads. However, if you're looking to flavour your K601, the K701 pads are a relatively inexpensive option, so might be worth a try.


Note: I purchased my K701 pads as separates back at the end of May 2009, and I do not own, nor have I heard the K701.

post #949 of 2232

Guys I gave up, I returned the K612 Pro!

 

Although I was enjoying the clean and precise sound, I was fed up of trying to understand if they were faulty or was my amp not working.

 

I bought them for the low price and the relatively low impedance, which made me think that I had no problem to drive them.

If I have to buy a headphone amp, then I will chose exactly the headphones I like.

More specifically I had the impression that for my personal tastes the K612 where too "cold", somehow lacking impact especially on the bass.

 

I want to try something warmer, more involving and as I was still on time to return them, I did!

 

I hope I will not regret the decision...

post #950 of 2232
Quote:
Originally Posted by doraymon View Post

Guys I gave up, I returned the K612 Pro!

Although I was enjoying the clean and precise sound, I was fed up of trying to understand if they were faulty or was my amp not working.

I bought them for the low price and the relatively low impedance, which made me think that I had no problem to drive them.
If I have to buy a headphone amp, then I will chose exactly the headphones I like.
More specifically I had the impression that for my personal tastes the K612 where too "cold", somehow lacking impact especially on the bass.

I want to try something warmer, more involving and as I was still on time to return them, I did!

I hope I will not regret the decision...

The K612 sounding cold is a sign of being underpowered or bad synergy going from my experience with them, they like tubes the most in my experience and they are a bit picky with SS amps, the bass and midrange really comes to life on an amp with good synergy, also a good DAC synergy is important for the warmth to come in. I would suggest looking into something like the HD 558/598 or MA900 if you want something easier to drive, less picky with systems, and inherently warmer. They don't have quite the potential or refinement the K612 but are far easier to work with and similarly priced.
Edited by kman1211 - 1/22/14 at 10:08am
post #951 of 2232
Quote:
Originally Posted by kman1211 View Post

I would suggest looking into something like the HD 558/598 or MA900 if you want something easier to drive, less picky with systems, and inherently warmer. They don't have quite the potential or refinement the K612 but are far easier to work with and similarly priced.

I am seriously considering to stretch my budget and get the HD650... I know they have a nominal impedance of 300Ohm, so on the paper they should be even more difficult to drive. But you know what? On the paper my amp should have been more than enough powerful to drive the K612 Pro.
The more I read about the HD650, the more I am convinced that they are what I like...
And if also in this case I will need an extra amp, well, I can always decide to buy one or return them.
post #952 of 2232
Quote:
Originally Posted by doraymon View Post

I am seriously considering to stretch my budget and get the HD650... I know they have a nominal impedance of 300Ohm, so on the paper they should be even more difficult to drive. But you know what? On the paper my amp should have been more than enough powerful to drive the K612 Pro.
The more I read about the HD650, the more I am convinced that they are what I like...
And if also in this case I will need an extra amp, well, I can always decide to buy one or return them.

That may be the best, I was about to suggest the HD 650 if you're willing to pay the extra cost. The K612 is harder to drive and it's harder to find good synergy with than the HD 650 imo, I found the HD 650 to get louder and is less picky picky of the system. I do consider the K612 and HD 650 in the same league after hearing both on multiple high-end systems, but the HD 650 is far easier to work with and sounds much better underpowered imo.
Edited by kman1211 - 1/22/14 at 10:59am
post #953 of 2232

I will try to post some impressions when I get the HD650, although I'm no expert...:o

post #954 of 2232
Quote:
Originally Posted by doraymon View Post
 

I will try to post some impressions when I get the HD650, although I'm no expert...:o


Yeah, I hope they work out for you. It can take a while to find exactly what you want. It's a matter of trail and error with headphones, amplifiers, and dacs and the synergy between the three. And trying out different sounds to see what you like the most. A lot of it is simply trying to find the right headphone for your system, hopefully the HD 650 likes your system a lot.

 

For example I found my system to absolutely love the K612, they sound simply divine on it, while say the HD 650 when I tried it on my system wasn't that good of a match, it sounded weird and off on my main amp, yet when I tried the HD 650 on the Magni it sounded really good.

post #955 of 2232

Hey, anybody offhand know how to open these up (specifically, K601, but I'd think they're similar)? Twist the back grille out and then... or...? I mean on the cable entry side with the wiring, not the pads and driver side.

 

After a few too many accidental hard tugs on the cable over the years, the sound is cutting on and off on the left side but comes back after a slight adjustment of the cable. I'm pretty sure it's just some wire(s) fraying on the joints at the headphone side, so a solder / small termination recable / something kind of fix should do it.


Edited by mikeaj - 1/23/14 at 8:28am
post #956 of 2232

I opened my 702 last week. It involves rotating the silver end-cap counter-clockwise. Most people stick a small piece of metal into two places in the cap and then twist. Just a word of warning: It can take quite a bit of force to twist. Mine took so much force that I elongated the two holes I was using to open them. It would be better to find a more gentle method of gripping/twisting the end-caps.

post #957 of 2232

Yeah, got it, thanks (after scratching it up a bit). Sure enough, the ground connection for the left channel was pretty much gone and the lightest tug broke it completely off.

 

Unfortunately, my $5 fleabay soldering iron seemed to be oxidized past the point where I don't even want to bother trying to get it in order, so the headphones will have to wait until I can get a replacement for that.

post #958 of 2232
Quote:
Originally Posted by kman1211 View Post
 


 A lot of it is simply trying to find the right headphone for your system, hopefully the HD 650 likes your system a lot.

 

So guys I received the HD650 and had a few minutes to test them in parallel to the K612 Pro which I'm sending back in an hour...

 

It looks like I finally found what I was looking for!

 

As a general comment l can totally agree with kman1211 in saying that the two headphones are definitely in the same league, the rest is a matter of preference.

And speaking about preference here are my comments:

- Build quality (or better, "touch and feel"): good in both cases, although not outstanding.

- Comfort: the HD650 pads are softer, but the pressure on the ears is higher than the one of the K612. Overall I felt the K612 lighter and more comfortable.

- Design: The K612 are beautiful in my opinion, for my tastes they win hands down!

- Sound: now I understand why the HD650 are loved by so many people. I found exactly the kind of sound I was looking for: warm, involving but at the same time precise. The highs are rich and crisp but they never become "invasive" (as IMO in the K612) and there is no sign of sibilance (again, IMO like for the K612). The basses are clearly more present than the K612 and help deliver a more involving sound.

 

One last comment abut the problem I had to drive the K612 with the headphone amp of my Pre/DAC: although the HD650 have a higher impedance (300 Ohm vs 120 of the K612) the situation has clearly improved. By the way the HD650 go decently loud even with my Macbook Pro!

I can now relax and take some time to evaluate if I will want to try a dedicated headphone amp...

 

Final comment: the best compliment I can do to the HD650 is that they make me always ask for more listening... A good sign, I would say! 

 

 
Guys, sorry if I misused some adjectives here but 1) I'm not a native english speaker and 2) I'm no audiophile!
post #959 of 2232
Quote:
Originally Posted by doraymon View Post

So guys I received the HD650 and had a few minutes to test them in parallel to the K612 Pro which I'm sending back in an hour...

It looks like I finally found what I was looking for!

As a general comment l can totally agree with kman1211 in saying that the two headphones are definitely in the same league, the rest is a matter of preference.
And speaking about preference here are my comments:
- Build quality (or better, "touch and feel"): good in both cases, although not outstanding.
- Comfort: the HD650 pads are softer, but the pressure on the ears is higher than the one of the K612. Overall I felt the K612 lighter and more comfortable.
- Design: The K612 are beautiful in my opinion, for my tastes they win hands down!
- Sound: now I understand why the HD650 are loved by so many people. I found exactly the kind of sound I was looking for: warm, involving but at the same time precise. The highs are rich and crisp but they never become "invasive" (as IMO in the K612) and there is no sign of sibilance (again, IMO like for the K612). The basses are clearly more present than the K612 and help deliver a more involving sound.

One last comment abut the problem I had to drive the K612 with the headphone amp of my Pre/DAC: although the HD650 have a higher impedance (300 Ohm vs 120 of the K612) the situation has clearly improved. By the way the HD650 go decently loud even with my Macbook Pro!
I can now relax and take some time to evaluate if I will want to try a dedicated headphone amp...

Final comment: the best compliment I can do to the HD650 is that they make me always ask for more listening... A good sign, I would say! 

 
Guys, sorry if I misused some adjectives here but 1) I'm not a native english speaker and 2) I'm no audiophile!

I'm glad the HD 650's worked out for you. It is about preference and also the system it's hooked up to, the K612 does reveal sibilance without a doubt, the HD 650 reduces this and makes it a more pleasant listening experience for sibilantly recorded tracks. The K612 is a more neutral and honest sounding headphone, but that's not what everyone wants. Personally I only favor the K612 to the HD 650 when the K612 is hooked up to tubes. The K612 tends to throw fits when it doesn't have the right synergy, get the right system and it really sings and becomes my personal favorite headphone outside of certain top of the line headphones. The HD 650 also wants a good system to sound it's best and it gets a lot better the better the system and synergy it has.
post #960 of 2232

How deep are the k612 cups? Are they about as deep as the dt770 gel pads? Deeper than the sound magic hp100 pads?

 

And what is the diameter of the pads like compared to the hp100 and dt770? Larger or smaller and by how much?

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