[murphythecat]

I'm looking at a end game tube amp for my sens hd-650. I also have speaker in near field that I think 15WPC could be enough.
I'm looking at Zana Deux, Manley 300b, Woo and I have to wonder how good the Cary is compared to other dedicated headphone amps...

 

[Blackmore]

As an speakers amp, fantastic, also for AKG K1000, but I never was really using its headphones out, however, there are one pair of headphones that I was simply shocked by their performance through Cary and these are Koss KSC75 and I am not joking.
 
For HD650 Zana would be one of the best choices