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Help choosing my first (decent) over-ear headphones for home use (my first post!) - Page 2

post #16 of 33
Quote:
Originally Posted by manbear View Post
 

If you have turn the volume up to max just to get to acceptable listening volumes, that is a sign that you need some kind of amp. I'd recommend a CMOY amp, because I used one with an AKG Q701 and it had plenty of power. This was the JDS Labs CMOY version -- make sure to read reviews if you buy a different version, as there are many variations. 

Fiio amps are also quite popular. 

wait is he only using a Dac... 

 

as a rule try not to buy a dac without an amp, there are many nice combo units, but just make sure your feeding your dac into some kind of dedicated amp

 

and the cMoy is a good option, the Fiio E11 is too 

post #17 of 33
Quote:
Originally Posted by Mshenay View Post
 

wait is he only using a Dac... 

 

as a rule try not to buy a dac without an amp, there are many nice combo units, but just make sure your feeding your dac into some kind of dedicated amp

 

and the cMoy is a good option, the Fiio E11 is too 


He's using the headphone out on a stereo speaker amp. Usually they have good headphones outputs with a decent amount of power but maybe this one doesn't.

post #18 of 33
Quote:
Originally Posted by kraken2109 View Post
 


He's using the headphone out on a stereo speaker amp. Usually they have good headphones outputs with a decent amount of power but maybe this one doesn't.

that is kinda strange 

post #19 of 33

Unless I read the OP incorrectly, it looks like he is using the headphone jack on the Audiolab 8200DQ, which is a DAC and preamp. It looks like a nice piece of kit, so I'm surprised that the headphone jack is lousy, but who knows. 

For a DAC like that, I'd suggest stretching the budget a little bit and getting a Schiit Magni or Vali, or an O2, or one of the other desktop amps in the $100-150 range. 

post #20 of 33
Quote:
Originally Posted by manbear View Post
 

Unless I read the OP incorrectly, it looks like he is using the headphone jack on the Audiolab 8200DQ, which is a DAC and preamp. It looks like a nice piece of kit, so I'm surprised that the headphone jack is lousy, but who knows. 

For a DAC like that, I'd suggest stretching the budget a little bit and getting a Schiit Magni or Vali, or an O2, or one of the other desktop amps in the $100-150 range. 

That sounds about right, the Schiit Vali or Magni would work nicely 

post #21 of 33
Thread Starter 
Quote:
Originally Posted by manbear View Post

If you have turn the volume up to max just to get to acceptable listening volumes, that is a sign that you need some kind of amp

My pre/DAC has a class A headphone amplifier, but I could not find it's output impedance anywhere. I sent an email to the manufacturer so I can check if maybe the output impedance is too low for the K612, which are rated 120 Ohm.
I hope That is not the case, I hove no money now for a good headphone amp...
post #22 of 33
Thread Starter 
Quote:
Originally Posted by manbear View Post

Unless I read the OP incorrectly, it looks like he is using the headphone jack on the Audiolab 8200DQ, which is a DAC and preamp. It looks like a nice piece of kit, so I'm surprised that the headphone jack is lousy, but who knows. 
Yes manbear, you are correct. I am using the headphone jack on the Audiolab 8200DQ, which according to many reviews has a very decent headphone amp.
As I wrote I am trying to get the specs of the headphone amp to see if they suggest it might be an impedance problem
I found the specs of the 8200Q (which is the brother of my 8200DQ but without DAC): "> 7.7V RMS/100Ω (for headphones with
8Ω-2kΩ impedance)"
post #23 of 33

Have you tried the headphones with anything else? I guess there's always the chance that there's a problem with them.

post #24 of 33
Quote:
Originally Posted by doraymon View Post
 
Yes manbear, you are correct. I am using the headphone jack on the Audiolab 8200DQ, which according to many reviews has a very decent headphone amp.
As I wrote I am trying to get the specs of the headphone amp to see if they suggest it might be an impedance problem
I found the specs of the 8200Q (which is the brother of my 8200DQ but without DAC): "> 7.7V RMS/100Ω (for headphones with
8Ω-2kΩ impedance)"


7.7 VRMS should be adequate, but the ultimate test is how it sounds in practice. I'm not sure if that 100 ohm spec means the output impedance of the amp is 100 ohms, or if means you get 7.7V into 100 ohms. If the output impedance is 100 ohms, that's probably much too high for 120 ohm headphones. You want an output impedance of 120/8 or less. 

post #25 of 33
Thread Starter 
Quote:
Originally Posted by kraken2109 View Post

Have you tried the headphones with anything else? I guess there's always the chance that there's a problem with them.

I did, with my iPad. At max volume the sound is not loud but decently audible. With the iPhone the sound is less loud and with some crackling noise.
post #26 of 33

How odd. I've been looking into those headphones for myself and haven't read anywhere that they're so hard to drive. Maybe ask in their main thread if anyone has similar issues? I'm beginning to wonder if there may be something wrong with yours.

post #27 of 33
Thread Starter 
Quote:
Originally Posted by kraken2109 View Post

How odd. I've been looking into those headphones for myself and haven't read anywhere that they're so hard to drive. Maybe ask in their main thread if anyone has similar issues? I'm beginning to wonder if there may be something wrong with yours.

Which thread are you referring to?
post #28 of 33
Have you tried using the 8200DQ with a different source - not the USB? Maybe feed an audio signal into the Aux input? I'm wondering if there is something going on with the USB interface to your PC. The Mac is going to see the DAC as an audio device. Is the system volume on your Mac all the way up?

Oh wait - scratch all that - you said there is no issue when feeding the PreAmp into the speaker amp...
Edited by billybob_jcv - 1/12/14 at 3:55pm
post #29 of 33
Thread Starter 
No billybob-jcv, the 8200DQ works great with the speakers, through a stereo power amp (8200P).
And it's not a Mac configuration problem as I play music with Audirvana Plus, which takes full control of iTunes and sound output configuration!

I don't know what to say, maybe it's just normal that I have to push up the volume to almost full scale to hear the music loud enough... I should try to borrow a headphone amp and see if there is a difference.

I don't think the headphones are faulty, well at list the sound is extremely clear, detailed, precise. It only feels like it lacks a bit of power, of thump... I don't know how to describe it better.
post #30 of 33
Quote:
Originally Posted by doraymon View Post


Which thread are you referring to?

Both of these threads have lots of posts in:

http://www.head-fi.org/t/216596/akg-k601-k612-pro-owners-unite

http://www.head-fi.org/t/685483/akg-k702-the-classic-vs-k612-pro-the-upstart-review-and-comparison

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