I have an older set of Accoustic Research 2.4GHz headphones with only a 3.5mm connection, although I can attach an RCA adapter. I recently purchased a Samsung model NU7100 smart TV, and like a lot (most?) of these TV's it has no composite out connection. I purchased a toslink-to-RCA adapter, which works well when using cable TV to send audio to the headphones. But when streaming Netflix, YouTube, etc., the audio does not go through to the headphones.