[TMRaven]

HD650 bass is literally the HD600 with like a 3db hump around 120hz.

 

[3X0]

HD650 bass is literally the HD600 with like a 3db hump around 120hz.

And a -25dB shelf above 10KHz.

Some dude on the HD 600 thread recently said it responds very well to bass EQ but YMMV.

 

[TMRaven]

HD600 is equally as rolled off in the HD650 in the extreme upper treble. 
 
Some HD650s have a good dip in lower treble, some don't.  The two differ the most in the upper midrange.  HD650's upper midrange is relatively balanced.  HD600's upper midrange is even somewhat too upfront and aggressive.

 

[nicholars]

So basically, if you can EQ the HD600 bass by a few DB and leave the rest of it flat, it is a better headphone than the HD650? I found the HD650 too slow sounding...

 

[TMRaven]

I wouldn't say better.  I say it's the same headphone.

 

[3X0]

HD600 is equally as rolled off in the HD650 in the extreme upper treble. 

Some HD650s have a good dip in lower treble, some don't.  The two differ the most in the upper midrange.  HD650's upper midrange is relatively balanced.  HD600's upper midrange is even somewhat too upfront and aggressive.

Not sure the plots I've seen correlate to that, but it's possible. Despite clear revisions (e. g. dark grey vs. silver mesh), it seems the usual graphing resources take greater care in dozens of measurements of the Beyer T1 and HD 800 over two visibly different revisions of the HD 6X0. It's hard to determine which revisions were being tested in each scenario, but most cases demonstrate the HD 600 having appreciable presence much farther out than the HD 650 has (i. e. after 16KHz or so).

I actually consider the HD 600's upper midrange to be the more balanced of the two, and the HD 650's to be a touch recessed around 5KHz.

They are very similar and I question whether the HD 650 driver is truly more capable or just tuned differently.

 

[TMRaven]

Although I ab'd the two in person, I'll give you one objective example.  Look at the HD600 graph on inner-fidelity.  If that ain't a nosedive after 10khz then I don't know what is.

 

[3X0]

Although I ab'd the two in person, I'll give you one objective example.  Look at the HD600 graph on inner-fidelity.  If that ain't a nosedive after 10khz then I don't know what is.

I think this is more of a consequence of the compensation curve Tyll applies than anything else. Look at the InnerFidelity HD 800, Q701, and DT 880 graphs.

In any case, those graphs also suggest that the HD 600 sounds more linear between 5KHz and 10KHz.

 

[TMRaven]

All things being equal, the HD600 has just as much of a dip above 10khz than 650 does.  And yes depending on the HD650 the 600 can be more filled out in the lower treble.

 

[3X0]

All things being equal, the HD600 has just as much of a dip above 10khz than 650 does.

I'm still not convinced since from the above I think the InnerFidelity graphs are inconclusive to that particular response threshold, and the goldenears and HeadRoom graphs as well as CSDs run contrariwise to that assessment.

 

[Mad Lust Envy]

Back to the X1, I should have the review up sometime next week.

 

[3X0]

Back to the X1, I should have the review up sometime next week.

I hope the review is taglined "New King of Mid-Fi(?)"

But it won't be.

 

[ourfpshero]

Quote:

I hope the review is taglined "New King of Mid-Fi(?)"

But it won't be.

LOL-please dont, witty tag lines are for low end cans, not decent headphones. 

 

[nicholars]

Quote:

I'm still not convinced since from the above I think the InnerFidelity graphs are inconclusive to that particular response threshold, and the goldenears and HeadRoom graphs as well as CSDs run contrariwise to that assessment.

 
That is actually a real word, I learned something new today.

 

[TMRaven]

Here's different graphs of the 600 and 650 if you don't particularly like Inner Fidelity (which you should over headroom).
Anyways I'm done with the discussion.  Neither the 650 or the 600 is better than the other.  In fact the two can even sound the same depending on the amp I found.
 

 

 
 
 
 
Back to my original point, you can make the HD600 bass into an HD650 with relative ease using EQ-- or even upstream components.