The best way to understand the advantage of using the Bryston BUC-1 USB interface is if you want to use your computer (laptop. Desktop etc.) as the File Management system 'only' for your digital music collection.
The USB input on the BUC1 is ASYNC so that means the soundcard in your computer is not used – the raw digital bit-stream is outputted on the computers USB to the BUC-1 USB input and the clocking and quality of your audio signal up to 192/32bit is controlled by the BUC -1 not your crap computer. The computer is just managing your files, playlists etc.
There are lots of cheap USB converters that use the USB connection and computer as the power supply but the BUC-1 has a substantial built in power supply as you can see in the diagram.
James
I'm certainly looking forward to trying out a BUC. I think it's the alternative answer to what the BDP has accomplished. The BDP is basically a computer on a network, a storage disk, an operating system with dedicated software, a great power supply, and a great soundcard to transmit digital information over S/PDIF.
Well, I already have a laptop computer on a network where I store and manage my digital files, along with my choice of playback software. The weak link is that the power supply is quite poor and adding an external USB soundcard uses the computers power supply. That's presently where my system lets me down. I've tried numerous external soundcards and I'm still not happy. Enter the BUC.
I feel for the price of a BUC, I will be able to match the sound performance of a BDP, but I'll be in control of the computer, the network, the playback software, the file storage, and I can use the computer to do all my ripping and file manipulation. Heck, I can even surf the net and send e-mails. I don't think the BDP can send e-mail.
I'll be interested when someone does a comparison between a BDP and a laptop/BUC combo.
brucek