half speed mastered is what you are looking for. The vinyl is cut at half speed so the sound are more accurate. Good luck finding one however, I do not think they make them anymore.
Running for Dummest question EVER
Is there (or could there be) such thing as High Definition Analog recordings and music reproduction, bear with me for a second, a process to engrave and read vinyl that would be in the nano tolerance. Forgive me if this is totally ridiculous but just curious to hear opinions.