I think spec said it but I'm not sure... and the USB DAC I was supposed to get from Chicago, well it's envelope arrived with nothing in it and it wasn't insured. It's MIA and I'm SOL... So I'm hurtin and going to try to get the alphalite goin. Does it need 12volt AC or DC? I have a DC all wart but then someone, I think spec said it was AC and now I'm scared. I've broke enough stuff and don't want to smoke anything else, and I'm done with poplescan...