As televisions become slimmer, the sound quality also reduces. This is because there is limited space to include a powerful sound system. The most expensive and high-performing TVs do provide good quality sound so it may be adequate for regular programs such as talk shows, sitcoms, and reality shows. However, you may need something more powerful for watching movies and dramas.

One option that is gaining popularity is to add a TV soundbar.

This is an easy and affordable way to include an additional component for powerful sound. A soundbar comes with multiple speakers and electronics that connect to your TV. A few of these products may come with a separate subwoofer and some others include rear speakers to offer a complete surround-sound experience.

Most of these soundbars are long and slim and are mounted on a shelf over or below the TV or on a wall. Some pedestal-style soundbars are also available and are known as sound bases, which serve as a base for your TV. Following are five features you must check before you buy a TV soundbar.

Media players
Some models include an inbuilt DVD or Blu-ray player. You can directly connect the soundbar to your TV without needing a receiver, which reduces the number of wires.

Additional speakers
To enjoy a surround-sound experience, you may choose bars that include rear speakers. These are often connected to a wireless amplifier or woofer. Several of the subwoofers are powered through inbuilt amps that need to be plugged in an electric outlet. Such subwoofers generally offer greater control over the bass.

Online access
Some of the newer soundbars are capable of streaming TV shows and movies through Amazon, Netflix, CinemaNow, and Vudu. These products also have access to radio stations like Slacker, Rhapsody, or Pandora. You may also access social networking sites like YouTube, Twitter, and Facebook.

Controls
Most of the soundbars provide a front display panel, and you must choose one that provides easy visibility of the panel. The controls must be grouped as per the functionality and must be clearly labeled.

Audio and other features
A few of the soundbar systems include custom equalizers (EQ) and bass or treble adjustments. The digital sound processor (DSP) utilizes digital circuitry for sound duplication.

TV soundbars are available in different price ranges. You can buy one for $100 or can even pay as much as $1000.