Snooping for Christmas vinyl in my parents’ cabinet, we found this on the back of Lanza Sings Christmas Carols:
This is a “New Orthophonic” High Fidelity recording, designed for the phonograph of today or tomorrow. Played on your present machine, it gives you the finest quality of reproduction. Played on a “Stereophonic” machine, it gives even more brilliant true-to-life fidelity. You can buy today, without fear of obsolescence in the future.