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Excuse me, has this HDCD anything to do with Sony's super audio compact disc (SACD)? Thanks in advance. <<<

No. HDCD is an encoding process that brings back the analog "warmth" that some feel is missing in the digital medium to standard compact discs. SACD (super audio CD) is a new format that is 96kHz rather than the standard 16-bit of CDs and will not play in standard CD players. http://www.hdcd.com Peace.