atmasphere
"RIAA being for stereo. AES and LP were two alternate mono-only curves and the ’78’ curve was an approximation of the most common 78 curves of which there were quite a few."
That President II was 1958, the year Stereo LP’s came out.
MONO EQ.: all my 40’s and most of the 50’s Mono Jazz LP’s are playing thru my MM RIAA EQ. Close enough to AES and/or LP EQ?
78's. Using a Modern TT with 78 rpm, correct stylus, they would also go thru RIAA.