DAC in Japan


Hello,
I convinced one of my friends to do some shopping for me in Japan. I am in the market - looking for a DAC. Can you please suggest some brand names that will be cheaper in Japan (i am in US). My budget allows me to go up to $650.

He will be buying online and one of the dacs that I put my eyes on is the CEC DA53.

My system is not a high end (actually I am using it for headphones only): philips dvp642 > darkvoice 336i > hd650.

I would like to add some more detail and sound stage. So, if you can suggest some dac's which will be relatively (or dramatically, lol) cheaper in Japan, I would greatly appreciate the help.

Thanks...
ooztuncer
I hear very good things about this...

http://www.icl.co.jp/audio/english/m2-1.htm

Cheers
Jsadurni,
I had never heard of the brand. Interesting that they have a tube USB DAC. I will dig around to see if I can find any more about the company.