[squareznboxez]

the AD900X are a good alternative to the HD600s, similar signatures (sparkling vocals and highs, solid mids and recessed sub-bass)
 
Personal preference obviously but i think the 900Xs place nicer on the head, as well as the slightly more airy signature making it suitable for acoustic recordings and vocal dominant music

 

[whirlwind]

Grado 325
 
Senn HD650
 
Completely different cans.....both top notch and both perform over the price point IMHO
 
the HD650 can be had for this price used and in great shape.

 

[cdma2k]

you may try K702 and save some for better dac and amp

 

[Lorspeaker]

hmm didnt work for me..
i dun like K702 for vocals...
it has this spike somewhere in the upper mids that bothered me.

 

[RyanDJ1]

What about the 650 vs 600 for vocals?

 

[Brooko]

What about the 650 vs 600 for vocals?

 
Comes down to preference.  HD600 is more natural sounding - and a bit airier.  I personally think it's more tonally correct.
 
HD650 is a little darker, and warmer - more lush.

 

[cocolinho]

I had HD600, HE-400, X1, MA900, Mad dogs... and I would say HD600

 

[Lorspeaker]

vocals on 650 is absolutely seductive....on a tube amp.

 

[daerron]

I think the Sennheiser HD600 and Vali would be a nice combo. I had the HD580 which was a very good headphone for the price I paid and a supreme all-rounder, though I didn't find it the most exciting headphone around (definitely not as full sounding as planars). If I went back to the price and had to pick one today I'd probably choose the Philips Fidelio X1 (the X2 seems to be around the corner).