The Teac has arrived! Black is really beautiful!
I have installed the newest driver, then connected the DAC trough the usb. I have a normal cable, I am not ready to spend 50 euros on a cable, cause my ears are not trained enough to hear the difference (at least I think).
It works pretty well, having no problem with volume or sound. I am using Foobar2000 with standard configuration, cause I don't like the teac player.
And I just have found that all my flac CDs are 44.1 kHz. I haven't got nothing in superior quality -____-'.
Be patient, I have just started