Features: Advanced AL32 Processing Front USB (Universal Serial Bus)-A input for iPhone/iPod Separated digital & analog power supply Tweet. Advanced AL32 Processing & a new high precision 32-bit/192k Hz D/A converter, to dramatically enhance the music listening experience: Denon s Advanced AL32 Processor expands audio data to 32 bits & uses a proprietary algorithm to interpolate the data & perform up-conversion & sampling, achieving a playback sound that is close to the original source. Since high-performance devices capable of large-capacity processing read data samples across a wide spectrum & process them in a single stage, they interpolate signals with greater precision compared with multistage digital filters & other such devices. In addition, the use of algorithms ideal for frequency characteristics outside the audible range to filter sudden bursts of musical data or continuous sound at high frequencies protects sound quality from the adverse effects of aliasing noise or drops in high-range response. The Advanced AL32 Processor reproduces the delicate nuances of music, as well as spatial information such as the position of the artist & the breadth, height, & depth of the stage, in a more natural manner. High-precision 32-bit, 192-k Hz D/A converters have been used to bring out the maximum performance of the Advanced AL32 Processor. These D/A converters transmit differential output to each channel to improve sound quality during playback. USB (Universal Serial Bus) DAC function for PC/MAC audio in high sound quality: Rear USB (Universal Serial Bus)-B input, for high-resolution sound from a PC/MAC, lets act your Denon player as a high quality soundcard & extends the functionality to a new level. The player is equipped with a USB (Universal Serial Bus)-B input to let you enjoy audio files stored on a PC in the best audio quality you can expect. It is not just limited to PCM signals up to 192k Hz / 24bit as of MP3, WAV or FLAC HD, but even supports the Direct Stream Digital DSD format in 2. 8 & 5. 6 resolution. All signals will get the tr