I have to agree with voltron on this one. I took a big chunk of time listening to the hp-2/zana combo (had to hear the reks recommended combo ) and while it was good, it wasnt as "natural" sounding as some of the other gear I heard it with. I thought the Zana lacked a little bass control compared to the Krell amp or the modded Melos I heard it with. The zana wasnt a clear window to the music as some of the other amps I've heard it with. Not to say it was a bad amp though, it was clearly better then 95%+ of the competition.
and damn the hp-2 rocks, its one of those forget youre listening to the gear headphones.