NASHVILLE, Tenn.- Four little letters are changing the way people are watching television: HDTV.
Sales are up and Super Bowl Sunday is a huge motivator.
High Definition Television is a digital format that delivers theater-quality images and CD-quality audio, according to the Federal Communications Commission.
A manager at an hhgregg store in Cool Springs said what makes the new technology's picture better is its lines of resolution. Standard television has 480 while high definition has 1,080.
An HDTV set can cost anywhere from $379 to $4,000.
But sales people said it's worth the price.
"It is wanting the best picture available, and when you see the high definition broadcast, and you look at that screen and it looks like you are there -- at that event or right there in the room when you're watching that TV show -- that's what it's all about," said Brad Sherk of hhgregg in Cool Springs.
Industry reports said HDTV sales in the U.S. more than doubled in 2006.
Experts said that's due to falling prices -- and more programming being made available in the "high def" format.
NewsChannel 5 is the first station in Tennessee to broadcast local news in high definition. The network's launch takes place Sunday right after the Super Bowl.