i have the means to purchase the 009 and have been thinking about it, I have heard them and they have 2 things I value more than anything , extreme Transparency and uber Resolution.
but I just cannot wrap my head around using this with a special electrostatic amps that can't be used with anything else. These things are so transparent yet you cannot swap amps, or swap out cables, etc to compare teh differences. any of my current headphones I can (at least using an adapter) use with my laptop, tablet , cell phone, any desktop amp, any portable amp, any size usb thumbstick size dac/amp, etc not saying they are ideal setups but the connectivity is there.
if I get he 009 the flexibility to mix and match or take thing on the road, these things aren't there but yea these things are really that good so I still keep pondering..