That's where I got mine. You need to have them sent to an address in Japan, so go to tenso.com and sign up for their forwarding service. (sign up is free).
The packaging and shipping with Amazon Japan is always top notch, you have nothing to worry about.
To the guy who was wondering, these sound much more refined than the D7000s but then again they often cost about twice the price.
To the people talking about tube amps...these have an impedance of only 20ohms and therefore would probably be better served by a solid state amp.
Edited by Matvei - 3/10/14 at 3:27pm