Should have been clearer: I would expect that it would require external power, as USB does not supply sufficient juice.    Here's the embarrassing part: I'm looking to use this in ceiling-mounted speakers, not audiophile grade by any means. They specs that I've seen say something to the...

First time poster...    I am an audio newbie with very little experience in reading specs and understanding what they mean. I'm reading and trying to catch up, but was hoping to get some pointers as to whether my sought-after piece of equipment actually exists.   I will be using...