[Jabse]

The combo has to be a total of $600 and this includes the used price in FS section as $600 used combo MAY be much better than new combo for $600.
 
Priorities
 
1. overall sound quality, it needs to sound like a high-end headphone transparent, great clarity, non sibilant
2. good bass response, it can't be lacking this department
3. sound stage must be decent
4. comfort, i don't want to experience discomfort after a few hours...
 
My computer will be the source and for the amp it doesnt have to be portable, it just has to be a great combo with the headphone in order to unleash its full potential, also you could say i mostly listen to techno/electric music opposed to classical etc
 
EDIT: i removed isolation/closed since ill be listening in a room my myself lol

 

[ZARIM]

Bose QC15 + Matrix M Stage, Ultrasone Pro 900 + iBasso P4, Denon D5000 + D6, W5000 + E9+E7.

 

[jackmccabe]

I would suggest that you take a look at the thunderpants you can find them on the for sale forum for ~$400 ,
for the amplifier I suggest you look at a schiit amp if you can find one used that would be the best option.
Although if you currently do not have a dac I would suggest you take a look at the hlly smk-iii and matrix mini-i as these both have built in headphone amplifiers and very good dac's.
I personally really didn't like the Bose QC15 I thought that the active noise cancelling was very annoying and thought the hd25's were far superior for isolation.
 

 

[Proglover]

You'll probably benefit greatly from buying a DAC, since you're using it with your computer.
 
FiiO E7/E9 is a nice starter (E7 = DAC, E9 = Amp).
 
Maybe HD600 to go with that

 

[Jabse]

any more suggestions guys??

 

[Greeni]

Have you look into this review of AKG 701 + KICAS Caliente
 
http://www.head-fi.org/forum/thread/540545/review-akg-k-701-kicas-caliente-w-pictures#post_7289395
 
I think it has everything you are looking for except bass may not be the strong suite. 

 

[vrln]

Asus Essence STX (extremely good value for money DAC + headphone amp for high impedance headphones) sound card and a used Sennheiser HD 600 or 650. I think you mean that you also need a DAC? If not, what´s your current sound card?