5.1 channel DVD Home Theater: The Philips HTS3151D offers 5.1 channels of home theater with 1080p Upconversion and multi-format playback. With 1080p, you can play your standard DVDs and view them at an upconverted rate, where the image is boosted to a higher, near high definition resolution.
iPod and USB connectivity: Aside from an included iPod dock, you also get an MP3 player line-in cable. The USB Direct port allows you to play digital music in MP3 and WMA audio files, as well as view JPEG images, off a USB storage device (such as a flash drive or portable hard drive).
Dolby Digital decoding: Dolby Digital 5.1 decoding assigns six different audio channels to a specific speaker in a 5.1 system, creating an immersive sound environment. The addition of Dolby Pro Logic IIx takes a stereo source and produces a full 5.1 surround effect