3 Sony sound bars that will give any TV a serious audio upgrade

High-definition televisions have improved so much over the past few years that sometimes it's difficult to believe. HDTVs that would have cost thousands just a couple of years ago can now be had for just a few hundred dollars, and display quality has improved so much — even off-brand TVs have killer screens these days. One thing hasn't changed much though, and that's the sound quality on the built-in speakers that come in flat-panel TVs. Looking to give your TV an audio upgrade withou