At the NAB 2007 show in Las Vegas, Denon Professional exhibited the DN-C640 Slot-In Network CD Player ($899.99). Housed in a single-rackspace enclosure, the unit enables audio data-file playback from both CD and DVD discs and access to network playback capabilities, and can serve as a fully networked audio playback control center.
The DN-C640 is compatible with most standard audio data file formats including CD-DA, WAV (.wav), MPEG-3, MPEG-1 Layer II and Windows Media Audio (.wma), allowing for up to 20 hours of MP3 or similar audio playback from a single CD, CD-R or CD-RW. Additionally, the unit reads these files directly from a data DVD, with its greatly enhanced storage, promising to increase continuous single-disc playback to nearly six days of uninterrupted audio. For those requiring the fidelity of uncompressed WAV audio files, this allows disc playback unrestrained by the normal 80-minute CD-R time limit. Various file types may be combined on the same disc to accommodate different source formats of program material.
The unit features AES/EBU output, a parallel interface for connecting to consoles (Index Tallying/Fader Start), the ability to output POS and ISRC codes for tying to database in stations, broadcasting disc information (i.e., HD-Radio or RDS), conversion for 32-, 44.1- and 48kHz sample rates, and more. The DN-C640 has two unbalanced analog outputs (RCA L/R fixed level and RCA L/R variable level), one XLR L/R output with trim control, RCA and XLR digital outputs in AES/EBU or S/PDIF format and a 1/4-inch headphone output. Its control options include serial RS-232, GPIO (contact closure), infrared and Ethernet/LAN.
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