Marantz & Philips big one, available in two versions (CD-16 and CD-16SE), neither of which should be mistaken with the later CD-16D, a very slim later player with the plasticky CDM-12.1 drive.
Both CD-16 versions use the CDM-4MD diecast aluminium swing-arm drive - everlast.
The CD-16 has regular HDAM modules and a single an EI-core transformer with three windings to feed everybody
The CD-16SE (or Special Edition) has a toroidal transformer, NEW HDAM modules and a noise-filter before the added second (smaller) power transformer solely dedicated to the FL display. Which renders the audiophile habit of always switching off the display... somewhat useless :)
All the rest is exactly the same : diecast aluminium copper-plated chassis (shared with the Marantz-built Philips LHH700), SM-5803AP, SAA-7350, dual TDA-1547, low impedance double-differential output, regulated feeds for the DAC7, digital and audio sections etc.
The next step was the upgraded CD-16SE, introduced alongwith the first version of the CD-23.
The next big step was the CD-15.
And full-size mods are described in minutious detail at positive feedback.