If the device supports Dolby Digital it can deliver up to six different audio channels (sides) for a much better sound quality.
Audio output power is based on the number of speakers and their power in watts. High audio output power results in loud, clear sounds.
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
If a device supports Dolby Digital Plus it can deliver up to fourteen different audio channels (sides) with improved bitrates, for a much better sound quality.
This technology adjusts the volume of the device according with what the video player needs.
Dolby Virtual Speaker produces a surround sound experience over the stereo speakers.
SRS devices create an immersive 3D soundfield using only two speakers, simulating the kind of audio experience delivered by devices that support Dolby Digital.
Devices that support Digital Out can deliver sound through optic fiber audio cables (like TOSLINK) or coaxial audio cables, which can transmit high-resolution audio at fast speeds.