The NAD C 390DD is not only a new concept in amplification, but also in audio system architecture. First introduced in the now famous NAD M2 Direct Digital Amplifier, Direct Digital technology has been praised for its transparent, dynamic and detailed sound quality. Like the M2, the C 390DD has no analogue stages in the signal path, keeping music in the digital domain right up to the speaker outputs. All preamp functions are executed in the digital domain without the phase shift, noise and distortion that plagues all analogue designs regardless of price or pedigree. Its 35-bit architecture and 108MHz master clock also make Direct Digital one of the most accurate DAC technologies available.
It's an asynchronous DAC, a stereo amplifier and a media player, all in one! With it's radical architecture paired with NAD's MDC Construction, the C390DD is a new concept in amplification.
USB Mass storage device capacity
The following are the C 390DD's capabilities with respect to USB mass storage device playability.
Digital USB Front/Digital USB Back (USB Type A): Supports playback of MP3, WMA and FLAC files MP3/WMA: 48 kHz FLAC: 24 bit/48 kHz
Computer (USB Type B): 24 bit/96 kHz PCM content from PC or MAC
FAT12/16 root directory up to 256 files (short names)
FAT12/16/32 up to 65535 files (short names) per directory
FAT file system limited to 2TB
File and directory names limited to 64 characters
Up to 16 maximum level of directories
Supports USB version 1.1
C 390DD Audio Resolution chart.
USB Type A - 24 bit/48 kHz
USB Type B - 24 bit/96 kHz
Optical - 24 bit/192 kHz
Digital Coax - 24 bit/192 kHz
Optional HDMI DD HDMI-1 - 24 bit/192 kHz
For more information: DataSheet C 390DD Direct Digital Powered DAC Amplifier, (.pdf Format; 1547Kb)
For more on the MDC modules: DataSheet C 390DD MDC Modules, (.pdf Format; 1080Kb)