Viera Cast's assorted online content just keeps getting better - in addition to the popular contents such as YouTube and Picasa Web Albums, it now offers Pandora Internet radio, exciting sports from FOX sports, and tweeting web communications with twitter. No PC required.By using a combination of real speakers and virtual speakers, a more natural and smoother sound can be enjoyed. You'll notice the difference, especially in an action scene - you'll feel like you're sitting in the center of a true cinema theater.With the bamboo cone speakers, the sound becomes much more responsive. Vocals are more pure and cleaner, and the dialog is crisper and easier to understand than ever before. The Kelton type subwoofer reproduces highly robust, reverberating bass sounds.The SC-BT330 is compatible with a feature of ARC (Audio Return Channel). ARC allows receiving audio signals from the TV, on top of the preexisting HDMI function of sending audio/video signals to the TV with just one cable. This feature will simplify the connection by eliminating an audio cable connection between the TV audio output and the main unit's audio input.