I have a Yamaha - A-S1100 and Ascend Sierra 2EX speakers that I use for my turntable listening and freaking love it. It is set up fairly close to our TV and I want to be able to effortlessly switch between using my speakers for the TV, USB, and Vinyl. Is it as simple as buying a DAC with USB input and running wire from the Television to the amp? I know this may be a dumb question, but I have never been a TV person, but my better half wants to be able to watch movies with my speakers. Also, what would you guys recommend. I have about a $400 budget for this.