Denon AVR-4520CI 9.2 Chan Receiver PLUS DBT-3313UDCI Universal A/V Player Denon AVR-4520CI: Introducing newly Alpha 32 Multi processing Denon proprietary technology to work with Dolby and DTS contents (Multi-Channel Sources). Denon AVR-4520CI: Best in class Hybrid PLL Jitter Reducer to work with digital input signals for accurate and high quality audio playback. Denon AVR-4520CI: Fully discrete, mono AMP construction and high current power supply for all 9 channels (150 W x 9 ch, 8ohm 20-20kHz 0.05%). Powerful, dynamic yet naturally smooth and stable sound reproduction is available. Denon DBT-3313UDCI: Universal Disc Playability (Blu-ray, DVD-Audio, DVD-Video, Super Audio CD, CD) Denon DBT-3313UDCI: Quick response for disc loading and playback