Online upgrade doesn't work yet – with BTR7, it took around a year until this feature worked ... You have to use a Windows Computer to do the upgrade, following the instructions on the FIIO-Forum: https://forum.fiio.com/note/showNoteContent.do?id=202311221710377480434&tid=77

Oh – for me, that was a constant problem. I had to do a firmware reset to change this behaviour.

Okay, I am joining the group of the highly annoyed guys ... After I updated to FW 1.82, I listened for quite some time over Bluetooth only. After getting back to USB, I realized that gain in USB Mode has lowered significantly. On SH, I turn the volume around 50, and it is still not very loud...

Guys, relax! We might agree that in a good audiophile world, any product should work from the beginning and not after several updates, depending on the correct PC System. Updates are welcome for minor bugs and extra features and should work easily through the app. Well, a dream. But to calm...

Oh, this was exactly my Question before I accidently hit the final "order" button at HifiGo for the Fiio Q15, which I have now :relaxed: I don't own the XDuoo, but from all that one can read, it should be more colored than the Q15. I also would like to stress that you can at least easily take...

Hi – can I update directly to v1.66, or to I have to update to v1.59 first? Thanks!

I can connect to what you say about the Nighthawk - I once listened to it in a shop, but I didn't buy it because the tuning is so dark. However, I will never forget the experience :-) Never heard a headphone so relaxing. Still thinking about a second hand model ... And yes, the Fiio might be...

I have the BTR7 and now the Q15 and did some side by side comparison. As written before, I was quite a bit disappointed from the Q15, as I missed a certain punch that I felt the BTR7 had. After more testing, I see things a bit different: It seems that the Q15 doesn't add much in terms of...

Thank you so much for your description of the Q15's sound signature – "a bit dry and unmotivated" may be a bit hard, but yes, "something is holding it back from unleashing". I thought I was crazy because I wasn't completely thrilled ... Objectively, this device does quite everything perfectly...