Hi,I just got mine. Lovely little gizmo. I am listening with the Nighthawks using the balanced jack.
What color is your indicator light pulsing in? In my S8, I have the bluetooth BTR3K's settings "LDAC enabled". Also in the Fiio Control app, in "Select Bluetooth codec", I ONLY have LDAC enabled.
So one would think that I'm using the LDAC codec. Yet, the indicator color is more of a Lilac color, which is more purple (ie APTX) than it is white (ie LDAC.).
Edit: Yup, I'd say it's purple. Definitely not white. Also, I have rebooted both my phone and the BTR3K.
Maybe @FiiO can shed some "light" on the matter?
Update: I read somewhere else that with the BTR3, the LDAC indicator color is really just "less purple" than with APTX. I went into a dark room and compared the lights, and that indeed seems to be the case on my BTR3K as well: APTX is purple, and LDAC is a bit less purple (but still purple).
Is that what others here have observed as well?
Yes, when using LDAC, the indicator is white with a little bit purple colour. This is normal and please don't worry.