[greenback]

  I think I really want to try the SRH1540 but I am freaked out by the bass bump on the frequency graph at Headroom. 

Base is very low end sub bass. I own the Ultrasone Pro 900's and the 1540's are low end, but it is sub bass. They sound absolutely amazing to be honest. If you are not a trebelphile then you will be completely happy with the 1540's.
 
They are the best headphones I have ever owned for all types of music.

 

[kimvictor]

Hmmm now that I have RWAK100, I feel like 1540 is affected a little with high impedance. Lower impedance sounds cleaner.

 

[EllipticCurve]

I am looking to buy a new set of cans to replace my SRH840.
How good is SRH1540 in terms of female vocals? I heard the mids are not too forward...
I mostly listen to vocal trance.

 

[Bloodflowerz]

  I am looking to buy a new set of cans to replace my SRH840.
How good is SRH1540 in terms of female vocals? I heard the mids are not too forward...
I mostly listen to vocal trance.

 
I find it's dependent on the track recording. The mids sound very forward to me when playing Madonna and other 80's pop music. It's all down to the track and the way it was recorded. These headphones are very true to the original sound.

 

[HeretixAevum]

Tyl's review is in the works, looking forward to seeing his thoughts soon!

 

[UNIFi]

I'm most interested in the isolation and distortion tests. The 1840 was supposed to have higher distortion figures, though I've never got the chance to audition. I'd love to hear these and them.

 

[gelocks]

I'm most interested in the isolation and distortion tests. The 1840 was supposed to have higher distortion figures, though I've never got the chance to audition. I'd love to hear these and them.

 
Distortion or not, BOTH sound quite good!

 

[kimvictor]

   
Distortion or not, BOTH sound quite good!

IK. I was surprised at how high 1840's distortion was. I thought they sounded pretty good still.

 

[Byrnie]

IK. I was surprised at how high 1840's distortion was.

So was I.

 

[Byrnie]

I'm most interested in the isolation and distortion tests. The 1840 was supposed to have higher distortion figures, though I've never got the chance to audition. I'd love to hear these and them.

The distortion and isolation tests are up on InnerFidelity along with the 1840s too.

 

[hodgjy]

The distortion and isolation tests are up on InnerFidelity along with the 1840s too.

I can't find them even with the search. Can you give me a link? It's probably right under my nose, but I'm having mental technical difficulties. 

 

[kimvictor]

  I can't find them even with the search. Can you give me a link? It's probably right under my nose, but I'm having mental technical difficulties. 

Try headroom's graphs too. They have both 1540 and 1840's distortion graph. 1540 is actually better in terms of technical capability(as least that's how interpreted the graphs).

 

[Byrnie]

I can't find them even with the search. Can you give me a link? It's probably right under my nose, but I'm having mental technical difficulties. 

http://www.innerfidelity.com/headphone-data-sheet-downloads

Try headroom's graphs too. They have both 1540 and 1840's distortion graph. 1540 is actually better in terms of technical capability(as least that's how interpreted the graphs).

Yea I interpreted the same thing.

 

[hodgjy]

http://www.innerfidelity.com/headphone-data-sheet-downloads
Yea I interpreted the same thing.

 
Thanks!

 

[mjlee181]

I bought a srh1540 yesterday,I tested it before i bought it, the high pitch is slightly harsh to me on female vocal, most probably because it's new out of the box, just want to ask does after some times the sound changed? If yes roughly how many hours of burn in?