For the past 5 years I have been using bulky Pioneer wireless surround headphones. (The older D-2000 system- no longer sold)
They are a bit heavy- but the sound is incredible.
Last night they stopped working. I changed the battery, etc- but nothing helped. They're dead.
The Pioneer transmitter has a headphone out, so I plugged in my Ultrasone pro900's.
The 900's sounded pretty good, but they are closed backed and I'm not sure i was getting the same open...