Damn, the sound on the piano is compressed to death !!! And I have the feeling that it's passing through some kind of lo-fi speaker simulator instead of a simple EQ. Maybe you could try something like iZotope Vinyl : bypass everything noise-related and try only the "years" (1970, 1950...) button to quickly see if this gets you closer. This is simply some kind of bandpass filter, but I'm convinced it will help you a lot to get that sound faster.