there will have 2 separate folders, one is windows, another is the internal & SD

Also by using the 20200610 beta version, SACD file can be exported to external DAP by USB and synced flawlessly by using the Fiio stock programme. (no need of third party apps)

however, it couldn't send out to external DAP, as MQA resolution! After updated the beta version 20200610 ( thanks Gus), the problem solved, I am also reset the song library, its now MQA instead of SQ, and external DAP can be recognized any synced in 88.2kHz!

Recently so happened purchased with a MQA marked on it. I ripped it by PC/EAC normally to flac, it shown as 44.1kHz and can be played normally in PC/DAP. When playing in M11 pro, surprisingly it shown MQA, 88.1kHz, 24 bit and play flawlessly!

Thanks Gus, I downloaded and installed, those dsd and MQA files export to external DAP problems are resolved. Thank you very much. cheer

No, I am not using as DAC, it is like to be an storage and send out song files to external DAC. All the flac files ripped standardly in 44.1 kHz can play flawlessly without problem except the 2 kinds issue mentioned before. Thanks

Fiio Support - 2 questions: 1. When connected to external dap, dsd files .dsf cannot play? 2. Also when connected to dap, the MQA file will send out as 44.1Khz, although I have set the MQA to on ? (I am using official 1.02 firmware at the moment) Thanks.

I also tried to install the Teac HR player app from Google store, to my android phone and Fiio M11 pro dac. This free version locked those DSD 2.8 5.6 function. However if you USB plugged to external Teac UD-301 DAC, the DSD function will be unlocked. Those DSD files .dsf can now be synced to...

you can also try to install Teac HR player app from Google store. This free version locked those DSD 2.8 5.6 function. However if you USB plugged to external Teac DAC, the DSD function will be unlocked. Those DSD files .dsf can now be synced to DAC to lite on 2.8Mhz on screen. Even those you...

Great! good work. All my op amps in hand are in old age, purchased some ten years ago. I will try your suggestion, thanks.

I also tried out some op amp in hand making comparison, may be the orginal op amp in 301 is pure for audio buffer/amplifying, therefore most op amp are having good result. Even NE5534 performed all-round unexpectedly. I tried muses 8890, LME49710, 49720HA, 49722, OPA627AP, NE5534. All of them...

I used to add solder to all 4 pins and pull out one side of IC, then do the other side. After then by using desoldering wick to absorb/clean up all the exceeded lead on circuit board. By the way it should be used desoldering pump to suck out the solder is probably, but I haven't got one in hand.

I just made a mod replacing the 8920 with OPA627AP, the sound stage is better and the bass sound more solid.

Let replace the 2 wima 2.2.uf cap with some better one, the sound stage will be completely different! I found the poor sound is come from the 2 wima 2.2uf caps, and it is the bottle neck of the Dr.dac2 dx. I replaced them with 2 M-Cap 2.2uf 250V. It will be impressive rather than replacing the...