I'd use a wired set of earphones or headset to hear if the splitter is working.
I just bought an ownzone wireless headphone, hooked a splitter (3 way) into the signal from the tv and the soundbar and the headphones into the out. The soundbar works great but the headphones will not. Hooking headphones to the out from the tv and not the splitter and they work great, why does the headphone not work on the splitter?

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