I got one a few days back and all I can say (to my little knowledge) is that it sounds better than the Cowon D2 and my laptop (duh~). Thats a subjective opinion based on testing it with the very few headphones I have though... Like the Cowon D2 I prefer the player un-eq'd, as in all enhancing effects off and eq set to normal.
Even though the SQ is great it got some flaws. Mainly FW related, but also two hardware related: When playing movies and the screens back light is on, at low volume you can hear a tic-tic-tic like sound (like the one the unshielded radios gives off when you have your cellphone nearby, only a lot lower) and because of the Rockchip some album art will never (ever) display right.
Other than that its a great player, I'm going to be keeping this over my Cowon D2.
Edit: A little update here, after playing with the equalizer on the T51 I noticed that the setting only goes from 60hz to 6khz compared to the D2's 80hz - 11.7khz, both with 5 band.
Is the T51 at disadvantage for not going so high?
But, after (finally) having something to compare the D2 against, I finally noticed how much of a deal the bass roll of is, it packs a lot more punch on the T51 with no muffled feeling.
This might be fixed by tweaking the settings on the D2 but still.. Glad I got the T51.
