@atmasphere Only the RIAA curve is used for stereo LPs. The LP mastering electronics do not have a provision for changing the curve- they are pretty picky about it- my electronics are matched to my cutter head.
Yes but what about mono records from late 50,s through the 60,s , I have found that there are a few records that do need a different eq other than RIAA, I think their is still a debate whether the few phono preamps (for ex. gold note , sun valley, ifi) who provide different eq choices are valid for those of us with mono records. I have encountered a few 60,s london mono records that you can hear that RIAA eq is not used but i can,t be sure of that because I have no eq curve choices in my phono preamps that i own. I know M Fremer has already adressed the issue and says that by mid 50,s Riaa was the standard everybody was using, but my ears tell me it was not always the case.
Yes but what about mono records from late 50,s through the 60,s , I have found that there are a few records that do need a different eq other than RIAA, I think their is still a debate whether the few phono preamps (for ex. gold note , sun valley, ifi) who provide different eq choices are valid for those of us with mono records. I have encountered a few 60,s london mono records that you can hear that RIAA eq is not used but i can,t be sure of that because I have no eq curve choices in my phono preamps that i own. I know M Fremer has already adressed the issue and says that by mid 50,s Riaa was the standard everybody was using, but my ears tell me it was not always the case.