When you’re searching for the best audio system to rock out with, the newest equipment isn’t necessarily the best. Maybe you grabbed an awesome vintage receiver from a yard sale, or a pair of studio-quality speakers long before streaming music was a thing. Yes, you’ll have to make peace with the fact that your laptop doesn’t have a CD player anymore, and probably have to explain to some people what a compact disc even is. But you don’t have to remain tethered to your stereo or speakers to fire up the playlists on your laptop, phone, or tablet. You just need a bluetooth adapter. Here are some great choices that give your old system new life.