I am using the box so my TV can connect video and audio output to multiple devices. The TV only has one set of RCA audio outputs, but I had to send the signal to 2 separate wireless headphone systems. The only thing that worries me is the latency: there is a noticeable lag between the movement of a person's lips and the audibility of words. I have my TV's audio setting set to maximum for lip sync and it's still a bit annoying. Maybe it's not the device either, as I noticed a different delay between the two wireless headphones. Bottom line, I haven't had enough time to look deeper and I'm happy with the purchase.
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