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The Astell and Kern AK240 Impressions Thread - Page 95

post #1411 of 1794
Quote:
Originally Posted by Mimouille View Post
 

Man, are you crazy!? This is not what these are for. You should use them only to compare your iems and write reviews. And sometimes to see if what the graph says seems accurate. Listening to music...what has this hobby come to I ask you.

 

 

I'm shameful... and I'll see myself out and brush up my graph confirmation skills now.  :p

post #1412 of 1794
Quote:
Originally Posted by SilverEars View Post
 

It's not easy.  If they had control of it, the graphs would looks more ideal.  All these tunes depends on what drivers they use and how they do the crossovers, and still they try to tune it the best way or atleast in JHA case the V shape for stage as much as possible. Also, the measurement tool and compensation cannot be certain how accurate they are.  Impedance is universal though.

Your customs are more V shaped than my customs.:tongue_smile::etysmile: LOL

post #1413 of 1794
Quote:
Originally Posted by shigzeo View Post
 

Hello Goodvibes,

 

I need to correct you on one thing: I didn't test the CT7's impedance or input requirement linearity. I quoted the manufacturer. It has been my standard for finding hiss in sources as it is very sensitive to hiss; there is no earphone I've used that is more sensitive to it. 

Apologies. I assumed that you measured it with an ohmmeter because it's not commonly given by makers. At least that one's easily repeatable. From experience, actual impedance at low frequencies is generally about 25-30% higher than measured resistance.

post #1414 of 1794
Quote:
Originally Posted by SilverEars View Post
 

It's not easy.  If they had control of it, the graphs would looks more ideal.  All these tunes depends on what drivers they use and how they do the crossovers, and still they try to tune it the best way or atleast in JHA case the V shape for stage as much as possible. Also, the measurement tool and compensation cannot be certain how accurate they are.  Impedance is universal though.

Point was to use drivers that that don't do that. There's plenty out there to choose from and not that difficult to have things made. It's never easy to make a good multi way device but starting with viable parameters helps. If you make the best IEM in the universe but only 1/2 the buyers can approximate it's true performance, is it really a great design? Most DAPs and even stationary headphone amps or consoles have 1 ohm or higher output impedance. I think a 2 ohm output impedance should be acceptable for a DAP.


Edited by goodvibes - 7/23/14 at 1:51am
post #1415 of 1794

Aaaaannnnnnd back to the AK240

post #1416 of 1794
Hi,

I had no luck with my first AK240 unit. I had cracking noise within DSD64 and DSD128 playback. The DAC was not working, distortion independent from the sample rate and platform. So I exchange the unit. The new unit isn't perfect either. The volume knob is loose, and therefore the volume steps change in the back too easy.
Now I try to exchange this unit again, but no word yet from the dealer. Am I the only or have others similar problems?

Thx
post #1417 of 1794
Quote:
Originally Posted by pitchblack View Post

Hi,

I had no luck with my first AK240 unit. I had cracking noise within DSD64 and DSD128 playback. The DAC was not working, distortion independent from the sample rate and platform. So I exchange the unit. The new unit isn't perfect either. The volume knob is loose, and therefore the volume steps change in the back too easy.
Now I try to exchange this unit again, but no word yet from the dealer. Am I the only or have others similar problems?

Thx

That's real bad. Seems like luck is not with you.  Sorry to read this.

post #1418 of 1794
Oh that sucks. Sorry to hear. For the price they should be perfect, luckily my AKs are both in great condition.

They should exchange it immediately.

Shigzeo/ohm image has always claimed the AK build quality wasnt the best. I am sad to see he may be right.
post #1419 of 1794
Quote:
Originally Posted by Mimouille View Post
 

Man, are you crazy!? This is not what these are for. You should use them only to compare your iems and write reviews. And sometimes to see if what the graph says seems accurate. Listening to music...what has this hobby come to I ask you.

Mim,

 

Notice that you have moved your location to BJ...Or you have your gas mask with you supplying oxygen?

post #1420 of 1794
Quote:
Originally Posted by flymetothemoon View Post
 

Mim,

 

Notice that you have moved your location to BJ...Or you have your gas mask with you supplying oxygen?


Unfortunately I just breath it all in...

post #1421 of 1794
Quote:
Originally Posted by Mimouille View Post
 


Unfortunately I just breath it all in...

Take care, seriously, you need to.

 

I'm lucky that the company relocated me from Shanghai (to which I've been living for between 2000 to 2012) to Guangzhou in 2012 and seems like even SH's air quality has deteriorated ever since.  Sorry for off topic.

post #1422 of 1794
Quote:
Originally Posted by Mimouille View Post


Unfortunately I just breath it all in...

Quote:
Originally Posted by flymetothemoon View Post

Take care, seriously, you need to.

I'm lucky that the company relocated me from Shanghai (to which I've been living for between 2000 to 2012) to Guangzhou in 2012 and seems like even SH's air quality has deteriorated ever since.  Sorry for off topic.
Schucks, last Oct I was in both cities and had time on my hands. I coulda met with you both of you had the time.
post #1423 of 1794
Quote:
Originally Posted by Saraguie View Post



Schucks, last Oct I was in both cities and had time on my hands. I coulda met with you both of you had the time.

Let's do it next time should you come over again.

post #1424 of 1794
Quote:
Originally Posted by flymetothemoon View Post
 

Let's do it next time should you come over again.


Yep just let me know...

post #1425 of 1794
Quote:
Originally Posted by flymetothemoon View Post
 

Let's do it next time should you come over again.

 

Quote:

Originally Posted by Mimouille View Post
 


Yep just let me know...

 

👍 👍 👍

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