I think you would do better sonically with a good headphone extension cord and "wired" headphones. Unfortunately, the headwize.com forums are currently not working. Otherwize that would be a good souce of information.
I tried the Koss infrared wireless headphones some time ago. They were very noisy, like a bad gassy tube. Unless some radical improvements have been made, you'd be better off with an AM radio.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.