[FeralFox]

My friend is coming from a pair of hd 598's, but he finds them a bit muffled/vieled?
 
He's looking for a more immersive feel, and wants clarity, soundstage, depth, immersion. Isn't too fussed about booming bass.
 
He has also tried the ad700x, and found them too thin sounding, and empty.
 
If you have any more recommendations within the 300ish price range, go ahead.
 
Sorry if these questions are a bit vague, but he needs some fairly quick opinions.

 

[Solrighal]

300 what?

 

[Me x3]

What about Philips Fidelio X2?
http://www.innerfidelity.com/content/boss-philips-fidelio-x2

 

[KG Jag]

Seems like the old debate between (now former) flagships--now with more efficient X2 thrown in the mix.  The HD 600 is better than the HD 598.
 
The HD 600, DT 880, AKG Q701/K7XX each have something to offer.  The choice often comes down to sound signature preference.  See:
 
http://www.head-fi.org/t/634201/battle-of-the-flagships-58-headphones-compared-update-audeze-lcd-2-revision-2-6-4-13#user_HD600
 
and
 
http://www.head-fi.org/t/634201/battle-of-the-flagships-58-headphones-compared-update-audeze-lcd-2-revision-2-6-4-13#user_DT880

 

[FeralFox]

May have to throw the he-400 into the discussion now.

 

[ansi]

  May have to throw the he-400 into the discussion now.

 
Absolutely worth considering. I'd pick HE-400 over HD 600 and DT 880 if I had to choose one. Never owned a pair of AKG cans though.

 

[PurpleAngel]

  My friend is coming from a pair of HD598's, but he finds them a bit muffled/veiled?
He's looking for a more immersive feel, and wants clarity, sound stage, depth, immersion. Isn't too fussed about booming bass.
He has also tried the AD700X, and found them too thin sounding, and empty.
If you have any more recommendations within the 300ish price range, go ahead.
Sorry if these questions are a bit vague, but he needs some fairly quick opinions.

 
He might be able to improve the HD598s sound with a better headphone amplifier (tube amp?).
Do you know what he uses now (DAC & amp) with the HD598s?

 

[Youth]

I think the DT880 would be a great choice. It does however require the right amp.

 

[KG Jag]

  May have to throw the he-400 into the discussion now.

 
Going from Senn mids to the somewhat funky mids of the HE 400 will be problematic.