If anyone has questions, reply here and I will discuss them with you!
I just received my black, Bluetooth enabled DM13. Took less than two weeks to arrive. This is the hardware I have used with the DM13:
Ananda headphones, plugged to the front 4.4 balanced out.
Sony WH1000XM4 headphones, Bluetooth.
Hifiman EF500 via the optical out on the back of the DM13.
Cambridge Audio's DACMagic 200M via the optical out on the back of the DM13.
For the sake of comparison, I also had on hand my old AIWA XP-SP90 portable CD player and my old Sony Discman DNE509. These are the two units I have used for listening to CDs on the go, at the office, on bed, etc. I also listen to Tidal streams and my years old PLEX Media server ripped FLAC files (using my cell phone, iPad, computers), but just as with vinyl records, I enjoy alternating music streaming with playing physical music.
Here are my own impressions/opinions after some listening sessions:
Sound.
I love it! I won't be using the AIWA nor the Sony portable players, since the DM13 DAC is miles better than the DACs on those portable units. The details and instruments separation is good. Long listening sessions do not tire my ears. This DM13 makes me want to go through all my CD collection because is so enjoyable.
The DM13's sound level from the headphone balanced port is able to drive my Ananda headphones with ease. On the AIWA and Sony units I had to turn the volume way up for CDs made before the compression/loudness wars; but with the DM13 I get better sound with less volume selection. CDs made after the mid 90's play at good level below the DM13's mid-point.
Not much to say about using the DM13 as a CD transport. It just works as it should. Due to its size and mobility, it is better for me to use it as a CD transport instead of using my Sony UBP-X800. It's just more convenient. I do not notice any sound difference using the DM13 as a transport compared to the UBP-X800.
Gapless playback, yes, works on some CDs, it does not work with others. I do hope FiiO fixes this with a future firmware.
Bluetooth sound does not appeal to me because the only wireless headphones I have, the Sony WH1000XM4s, only take SBC codec from the DM13. Sigh. Perhaps I'll get some other wireless headphones with aptx to take full advantage of the DM13.
Operation.
I read some comments about the DM13's motor being noisy when spinning discs. That is not the case in my experience.
The feel of the front top buttons is very tactile. They have a nice click feedback.
I read the manual and then the FAQ page from FiiO for the DM13 and had no issues operating the CD player. I switch with ease the output modes. No trouble playing, pausing, stopping the CDs since I quickly got used to the buttons and have already memorized them just by using the unit a couple of times.
Build.
Does not feel plasticky --it's not. It's got a good heft, more than the AIWA or the Sony Discman. It does not look nor feel cheap.
Conclusion.
I love the DM13. For my uses and tastes, it is almost perfect. Almost. The gapless playback is the only feature that makes me find it lacking. BUT, to my own purposes, all of the other features and benefits outweigh the gapless playback issue. It would be grand if FiiO is able to fix the issue.
As a matter of fact, I am planning on buying another once other colors are available and give it to one of my children as a birthday present.