hmmmm.... if the unit does something or does something in a way that no more modern unit quite does, i’d move heaven and earth [within affordability or availability of fundage] to fix it. case in point, i have an old DBX CD player, unfortunately parts are not available to fix it, but it did something NO OTHER cd player before or since would do, it had a dynamic range adjustment [expand or compress], a stereo image adjustment [ditto] and an impact adjustment [made musical leading edges sharper], those were very handy features, sometimes i had to listen to music when people were close by and i didn’t want to disturb them at night, so i’d dial back the dynamic range. on some old Elvis CDs the PTB decided to record them in very narrow stereo, so i’d use the stereo width adjustment to fix that.
i also have an old Koss ambience enhancement box that when it worked back in the day, it gave me a pretty fair [for primitive digital] approximation of a virtual room behind my listening position. cool. same thing though, no parts available to fix it. a pity. but if there were parts i’d go into hock restoring them to playability. so if you like your old Rotel CD player for similar reasons, go for it.