A:Answer It makes sense you’d want to be prepared for your upcoming installation, and it sounds like you have already purchased some of the more common items that will help make the visit a success. Without knowing more about your existing equipment, or exactly what you’re trying to achieve, it would be hard to provide an accurate answer. I’d recommend stopping at a Best Buy near you, so a Blue Shirt can discuss this with you in more detail. There are many options when it comes to external audio, and other accessories or components that you may want to consider. With a little more information, we’d be glad to help!