Part Sony, part Accuphase, the DP-65 was the 4th integrated player of Kensonic Labs.
The sixteen stereo digital-to-analogue ICs contained are Burr-Brown's 20Bit PCM-1702, while the mechanism control and optical block&base are Sony's own G-Base that was found on the Japan-only CDP-R3 as well as the reference CDP-R1a driveand the contemporary CDP-X779ES & CDP-X707ES.

Along many hand-adjusted technical niceties, two 3-poles low-pass filters, a highly linear digital volume control, fully balanced power-supplies and circuits (even the servo/controls' !) and outputs, the proverbial long-term Accuphase quality is provided.
However, as with any Compact Disc player, long-term means: "as long as the optical block does last". I have no idea if Accuphase has kept a stock of spare blocks available for its older players. If not, a dead Accuphase player will only be... a dead Accuphase player.