Well this is more of video player than an audio player.
It supports .srt subtitles if they are in the same folder and same name as the video.
So far tested .mp4 ,.mkv and .avi all played no problem.
Audio quality is good but there are one or 2 niggles with the interface.
It recognises id3 tags but they get chopped off if they are too long, I like to see a scroll.
No album art (should be standard by now) and the font is not good, but this what you get on all these chinese players.
So far,
Pros
Good video support.
Nice big screen.
Good viewing angle.
Seems good build quality.
Good audio quality
.srt subtitle support.
Standard mini usb for charging and transfer
Cons
No album art.
Usual poor font.
Only English and Chinese language support
Id3 don't scroll
Not tested usb OTG yet or HDMI out (need to get a mini hdmi adapter!)
I would recommend this for a video player, but if you are buying for audio then the interface is
not good even though the sound quality is.
I think this could be a great all round player if Onda had put a bit more effort into the firmware.
I have quite an assortment of videos so I think this will be my main Video player now.
Full Review Here:-
[Review] Onda VX585HD from HouseofDap.com