The Panasonic SC-BTT270 Cinema System has Pixel Precision Progressive Processing for HD (also called P4HD) components, so older DVDs will offer similar quality to high-definition discs. Offering 1080-pixel resolution and 3-D effects, the Panasonic Cinema System with Blu-ray Player enhances the image quality. For media that is not already in 3-D, 2-D conversion is available on this model. The 7.1 channel virtual sound effects with a standard 5.1 channel capability makes the Panasonic 5.1 Channel Home Cinema System superior to previous models. In addition, 160 watts of power and Dolby Digital sound add to the cinematic experience of the Panasonic SC-BTT270 Cinema System. The remote that operates the Panasonic 5.1 Channel Home Cinema System requires two AA batteries.