TapeProject offers a catalog of classic albums they release on SM468 1/4 half-track tapes from original masters.
These tracks are among the highest resolution analog sources ever available for hi-end home listening.
As licenses that TapeProject acquires for duplicating masters are time-limited, the contents of their catalog varies over time. TapeProjects tapes are available through a subscription scheme. An hi-end tape deck is required for playback, the website lists their recommended Ampex, Otari, Technics and Revox/Studer models.