Gear Diary did a review of the RF-WHTIB. Best quote:
Once a connection has been established, just start listening to your system and enjoy the full surround sound experience. I was extremely impressed by the quality of the sound coming through these speakers. I did not notice any significant difference or degradation in the sound quality when they were hooked up to the wireless receiver than when they were connected directly to the stereo. I have definitely found my solution to the wireless speaker dilemma.
One of his key negatives is in reference to the “hum issue”. FYI, the manufacturer has a fix for this issue so current owners can refer to the discussion thread here, and get the fix. New models also have the fix incorporated.
Rock on.