I still recommend the 007t/ii amp that I use.
I needed to use warmish (or at least neutral) interconnects (single-ended works best for me) like Cardas Golden Cross and use a similarly warmish copper power cord on it (I use an old Shunyata Anaconda).
I still swear by the 007t/ii for the 009. It deals well with the fatigue factor and has a definite tube character.
The thing about the 009 is that it is quite sensitive to upstream cables (and other components, of course), but that gives you lots of options to tune the sound.
It took some work and experimentation, but it worked for me eventually so that everything is in equilibrium now, even at higher volumes with most of my music (popular, some classical, not much jazz).
Just my 2 cents, but I sense that if ever a phone needed some tube sound upfront, it's the 009.
Edited by rgs9200m - 12/3/13 at 7:42pm