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by rzzzt 3728 days ago
It should still be present in the EQ presets list, if the screenshot is reasonably up-to-date here: http://manual.audacityteam.org/o/man/equalization.html#manag...

One use the guide mentions is using it in inverted mode, if you want to undo the effects of incorrectly applied RIAA equalization (eg. when a 78 rpm record is being digitized with a different pre-emphasis method).