Review on Avantree TC419 Bluetooth 5.0 Transmitter Receiver with Enhanced Range for TV & PC Audio, Home Stereo Speakers, aptX LL Wireless Adapter for Headphones, Optical & AUX RCA Connectivity by Raymond Simmons

I am very disappointed with this. I use them for transmission. I've tried several. In most cases, once you turn off any of the devices, everything is lost and you have to start over. This claims that two people can listen at the same time. You can when you install it for the first time. As soon as one of the devices involved is deactivated, two people can no longer listen. You need to clean the machine and run the setup again. I suggest none of these work in the $0-$60 range. None of them can store setup information, so you just have to turn them all on. Mine currently shows two connected devices. I know what one is because it works, but I have no idea what the other is. These aren't the second headphones I'm setting up as they don't receive anything. One earbud works, the other doesn't. However, he says he is linked to two. I turned off all my other devices so I know this isn't one of them. I have no idea what this other device is. So it will connect to a mysterious device, but not the one I configured. I've experienced something like this with all of these devices. If you want one that works, you should probably spend a lot more money.