How stable has the RockBox port become? I've been sort of following because of the very positive experience with using RockBox on the Xduoo X3. Especially considering I'm looking to pretty much exclusively play CD rips into 16/44 flac files so the 24 bit music file downsampling isn't really an issue with the RockBox port for me.
It's pretty stable so far aside from a few quirks/missing features. So far I've noticed that:
If you're playing music, and want to search through your music to queue up more on your playlist, scrolling through a long list of artists/folders tends to freeze a bit unless you slowly scroll one by one. Scrolling while nothing is playing is perfectly smooth with no issues.
Date/Time is missing, so a Rockbox theme that displays the time at the top of the screen will just show --:----
Bluetooth feature is currently missing. (not a big deal to me, while I do have a couple Bluetooth pairs, my main and best pairs of headphones are wired)
Plugging in to charge while listening to music works, but seems to stop as soon as it reaches full charge. The System info also doesn't display time remaining for the battery, just percentage.
Can't adjust volume on the system screens, only on the now playing screen.
Volume adjusts at very small increments so you have to hold volume up or volume down for a while to make a significant change.
Disk mode (plugging in the player to manage the music on your computer) isn't implemented in the build I used, but seems to have been added according to the thread on the rockbox forums, but this isn't a needed feature for me so I haven't bothered with it (I can always just do that in the stock firmware since it's dual boot or pop out the SD card and plug it into my computer).
Can't currently change font/background/selector colors in the theme settings as the buttons haven't been mapped properly for it, just have to stick with theme defaults.
Missing/not working plugins/games. These are really just extra so I don't mind that they don't all work (although I wish PictureFlow worked)
Having mentioned it, does the Benjie T6 version downsample 24 bit to 16 to support playback?
I've known about Rockbox's downsampling to 16bit and was curious about that too (I have a few 24/96 HDtracks releases). But I have no idea how to check if Rockbox is actually downsampling or not. One thing I will say though, everything I've listened to (16/44 or 24/96) has sounded phenomenal, and noticeably better than on the stock firmware. Everything just sounds balanced better (even without EQ settings or anything), and less harsh than on the stock firmware. I don't know technically why it sounds better, just that to my ears, it's a noticeable improvement.