Upgrade your TV into a complete digital home entertainment system with this state-of-the-art "all-in-one" LX3000D DVD digital surround sound receiver package. Night mode establishes dynamic range compression of digital sound to reduce the volume differences between the loud and soft passages in source material with digital surround sound where sound level differences can be so dramatic. This feature is especially useful at night when you don't want to disturb the neighbours or wake up the kids!