will not work with optical signals from some tv brands [SEP] the original tvlink i did not have a optical input so they added a crippled one to the tvlink ii the issue is that virtually all modern tv sets output audio thru a optical connector and are set to dolby digital by default the tvlink ii will not respond to a optical signal with dolby digital why the resound reunite works fine with a dolby digital optical signalso if your tv allows it you can go into setup and muck around to change the audio decoding to pcm in order to make the tv link ii work unfortunately many panasonic and lg tv sets will not allow you to change to force pcm output so you need to buy a separate decoder a high quality decoder is expensive the cheap ones delay the signalso my tvlink ii works with my samsung tv once i changed the audio format but not my panasonic