preliminary
Probably the most remembered "Jubilee" or "Anniversary" series.
Yamaha spared no expense for the Centennial Series and could do so : this was before the 1987 crash and subsequent 1990s gradual retreat of all japanese brands toward the mid-end and low-end segments of the market.
The production run for each Centennial unit still is a mystery but, contrarily to what one could believe, the three tenors of the series (CX-10000, MX-10000 and the CDX) did sell very well - given their pricetags that is.
The NSX-10000 and HX-10000 are much much more difficult to find.
The CDX-10000 CD player featured Yamaha's Hi-Bit chip, part of the then-raging Bit-trek and Bit-tweaks, before the cheaper Bitstream wave hit just about everybody.
The CDX is built well enough too withstand an earthquake and a serial mom's fit of anger alltogether - 25kg of steel and triple chassis structure.
The loading assembly is, rather strangely, as in all of Yamaha's top end players incrediblyy complex and heavy. If you've ever seen a CD-1, you know what I mean.
Over-engineering would you say ? Sure - but gloriously, lavishly, with style and grandeur ! A true 1980s byproduct indeed :)
Hi-Bit technology is covered here.
The more technically inclined should do a Google search including the words <Yamaha> and <Stanford> to find plenty of PDFs covering the subject in a very scientific manner : Yamaha and the Stanford University are long-time partners in music&technology research.