Originally Posted by mikeduchesne
You can only order the headsets (model SE-DHP800) from Japan, and I would recommend you to order from
www.pricejapan.com. From what I saw, it would cost you around 12495 Yen ($107 approximately) + transport.
www.pricejapan.com base their prices on the best price that can be found on another japanese site
www.rakuten.co.jp.
Here is a translated version of the site where I found that price:
http://translate.google.com/translat...ial%26hs%3DWKW
I just ordered a set of SE-DIR2000C from them and until now, the transaction is smooth. I still have to receive it, but at least I have a tracking number

. I've made some research and they seem to be serious and trustworthy.
Good luck!
I also purchased the Pioneer SE-DIR2000C this month, from Japan Audio. I'm very pleased with the sound quality and the IR transmission. I am even able to walk into an adjacent room and receive clear transmission, when I've stepped behind the wall between the rooms. I suspect the IR is entering through the doorway and bouncing off the wall to my headphone.
On an important note the headphone power adapter is rated at 100 volts, 1000 mah or 1 amp. Plugging a 100 volt transformer into 120 volts will cause it to run hotter, and although its output is a 'regulated' 12 volt DC I measured the output at roughly 10% higher voltage than another 120 volt ac to 12 volt DC adapter that I own.
I decided not to risk the headphone circuitry with the supplied 100 volt adapter. I cut off the plug and soldered it onto my 120 volt AC to 12 volt 1.6 amp adapter that I happened to have from another product. I can't be certain that the 100 volt Pioneer supplied adapter would ever burn out or cause damage to my Pioneer SE-DIR2000C headphone, but I feel much safer this way.