From the Manufacturer
Yamaha 3D-Ready 5.1-Channel 500 Watts Digital Home Theater Audio Video Receiver features ..
Yamaha’s exclusive CINEMA DSP technology supports playback of HD Audio, providing natural and expansive sound imaging./ * Compressed Music Enhancer * When music is encoded into a digitally compressed format like MP3, the frequency response suffers. Yamaha’s Compressed Music Enhancer employs sophisticated digital signal processing using exclusive algorithms to restore what was lost, so the music always sounds the way it should.
• Adaptive DRC (Dynamic Range Control) automatically adjusts the dynamic range of the sound according to the volume level. This ensures that you hear clear dialogue and vocals, and all sound effects at comfortable levels. There is no need to adjust the volume level as you listen; everything from whispers to big explosions will be heard clearly and comfortably at the same volume setting. Also tones down loud TV commercials & is ideal for late-night low-volume listening, so you don’t disturb others.