I'm curious if anyone has a 5.0 Bluetooth transmitter that they've paired with the Nox to determine if it's an APTX LL transmitter or not. I have three Taotronics TT-Ba07, 08, and 09 versions, however, none of them give the + sign when coupled with the machine. I'm not attempting to utilize it with the Nox, but rather with a different machine. When my Q-12 earbuds are linked, the Plus sign appears. I'm looking for a transmitter to utilize with the Q-12s that has the least amount of lag. Any suggestions or ideas would be much appreciated.