@Shanling No rush to respond. Hope you and your team have a good rest over the Golden Week holidays!
Before I forget, the CD player aspect and SRC is excellent! I have always enjoyed the Shanling implementation of SRC from the time I first had the M30. Good that you have it here too.
As a matter of context, I tend to use my Shanling M9 as the controller for LDAC streaming and QPlay (DLNA in QQ Music).
1. For BT streaming, I notice that I have to place my M9 within 2 feet of the ET3. If not, connection will be patchy and there is interference. I have tried pairing with iBasso DX300 and DX320. They will pair but will only stay connected if I have the iBasso DAPs on top of the ET3 or within half a feet. Once I bring the DAPs further than that, the connection breaks. I know it cannot be that the iBasso DAPs are faulty because I use them to stream LDAC to the FiiO BTA30 Pro which is connected to another DAC and my desktop rig. I suspect it is something that can be fixed via firmware.
2. For DLNA streaming, I am experiencing what someone else earlier the thread had mentioned with DLNA streaming. When I select the ET3 as output in QPlay in QQ Music, it will play the first track in the playlist. And then it stops. I will then have to unselect and reselect the ET3 again in the menu under QPlsy to get it to play again. Sometimes manually skipping to the next track works; other times it does not. For example, QQ Music will show it playing but no sound will come out from the ET3. I do know that QPlay should work perfectly fine because I also use the M9 and my iPhone (as well as the iBasso DAPs) to use QPlay to stream to the M30, and to other DLNA capable streamers.
I do think that the ET3 has great potential, not least because of the upsampling via I2S. I am really enjoying the sound quality when connected to my Holo Spring 3 KTE. What will advance the user experience is to resolve the current issues with LDAC streaming and DLNA streaming.
Thanks
@Shanling