That's it!!!
Working with the next error in console:
May 3 22:56:47 UgoHack kernel[0]: IOAudioStream[0x9d07400]::clipIfNecessary() - adjusting clipped position to (20a,251)
May 3 22:56:47 UgoHack kernel[0]: IOAudioStream[0x9d07400]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (20b,252)->(20c,452).
I will try without the Pref Pane!