The universal player Pioneer UDP-LX500 offers a sharp/soft/slow digital filter setting; that might give you the EQ options you need. It also has an "Audio Direct" setting to bypass all filtering.
The Audiolab 8300CDQ (CD disc player and DAC-pre) offers 7 digital filters for PCM and 4 for DSD.
The Panasonic DP-UB9000 CD-Blu-Ray (no SACD) player offers a bunch of audio things like night time mode, "remaster" (treble) settings, "digital tube" setting (warmer), and a dialog enhancer.
For pure compatibility of disc formats, I’d say the Pioneer is the nearest to a current production Oppo.
The Audiolab 8300CDQ (CD disc player and DAC-pre) offers 7 digital filters for PCM and 4 for DSD.
The Panasonic DP-UB9000 CD-Blu-Ray (no SACD) player offers a bunch of audio things like night time mode, "remaster" (treble) settings, "digital tube" setting (warmer), and a dialog enhancer.
For pure compatibility of disc formats, I’d say the Pioneer is the nearest to a current production Oppo.