I like the look of it. It's well laid out and easy to use.
I don't like that I can't get anything to connect to it via TX (transmit).
The only device that I have, that will connect reliably is my Hiby R3; but only SBC.
iBasso DX160 - nope.
Fiio Q5s - nope
Pixel 3 XL - nope (hit and miss)
Hiby R3 - SBC only
TaoTronics Bluetooth 5.0 Transmitter and Receiver, 2-in-1 - SBC only
On the RX side my phone was the only one that was able to send to it in APTX - HD but not lossless. Hitting the HD mode selector just made the light blink and it went right back to HD.
I just ordered a Fiio BTR5 if that thing doesn't connect to it in APTX lossless I'm returning the 1Mii B03 "Pro". So there is a slight chance I'll keep it to avoid the hassle of doing a return.
Excellent product! I bought two - one to send, one to receive, for a remote TV speaker. Hooked them up, turned them on, automatically paired and connected instantly. Transmitter also connected to my remote headphones with an excellent range and no perceivable latency in either setup.
2 years later: These units have now been communicating with one another non-stop for almost 2 years. They have never been turned off.