A:AnswerNo. These adapters typically do not transmit to multiple devices simultaneously. The max pairing is 2. Usually 1. If it did allow 2 concurrently paired devices, the sound is unlikely to be transmitted/received simultaneously and the sound would be terrible. Additionally, these adapters have very poor audio fidelity and limited range. You would do better with wires run under the foooring or in the walls/ceiling.
A:AnswerAre you on the roof of your car? The trunk? Are you trying to project video using your car as a makeshift movie screen? Whichever it is, this product is not meant to allow you to watch video on automobiles of any sort, based on the description.
A:AnswerThe beats headphones are certainly sufficient to reproduce the frequencies and will work well and sound great. Hard wired cables are always best for Recording to reduce signal loss and noise.
A:AnswerIf you’re looking to play music in your in your sound bar from a smart device, I would advice you to connect it to your sound bar and pair it with a smart device in receiver mode. However, if you’re looking to listen any kind of entertainment out of your television. The proper mode for this would be sender to a Bluetooth headphones. Please follow instructions that came with it.
Hope this helps!