Do you mean even smaller than the less-than 400-700 nanometers already achieved by the average LP? Ultra-high resolution is already a fact of vinyl pressings, since the quoted figures are those of the wavelength of visible light, and the grooves on LPs are even smaller than this. A nanometer is one billionth of a meter, and a record pressing already lies in this domain of scale.
It is more a matter of compressed recordings and poor pressings, and of the quality of the playback equipment (which, with an open mind, need not be extravagantly expensive), than even tighter tolerances, which, being analogue, can be achieved without having to change the hardware.
It is more a matter of compressed recordings and poor pressings, and of the quality of the playback equipment (which, with an open mind, need not be extravagantly expensive), than even tighter tolerances, which, being analogue, can be achieved without having to change the hardware.