Hi, after installing new 009 alpha on Core i have some observations to share.
1. Thanks for supporting my Sabre 9022 DAC in amplifier over USB asynchro. Now it started working. :)))
2. Unfortunatelly there is sound (over USB), but with cracklings. So there is some to do. But its progress!. 
3. Movies started play do not smooth. In 008 movies were playing flawless.
[SOLVED]
Another issue, i think its a Kodi Krypton, is changed player hud. During playing movie i pres OK button on remote of Core and there is no rewind, forward etc buttons (in all skins i tested). I need to start mouseair on remote to see these functions. Is it changed in Kodi?
Press OK and hold.