I bought the TT-BA07 to transmit to 2 pairs of headphones at the same time from my RODECaster Pro.
The first unit I received didn't pair.
I emailed email@example.com and received excellent support from Sheya, who told me a diagnostic procedure to reset the device and try again. But it still wouldn't pair. Then the red light went on and stayed on. The device was faulty.
Without requiring me to send back the faulty device, Sheya sent out a replacement, which arrived in 4 days. I charged it, then tested with the first headphone, a Sennheiser HD 350BT. It paired! Then I followed the instructions, turned off the headphones, and put a 2nd pair of headphones in pairing mode. It paired too. Then I turned the first HD 350BT back on and paired it again with the TT-BA07. Now both devices are paired and work at the same time.
I am glad I persisted with the TT-BA07. It's exactly what I need, and I have more confidence after my support experience with Taotronics than I would have had without this experience.