At which Los Angeles studio was Metallica's 1991 self-titled album recorded?

Metallica's 1991 self-titled album was recorded at One on One Recording Studios in Los Angeles. The sessions ran from October 6, 1990, to June 16, 1991.

The studio became the setting for an extended recording process involving Metallica, producer Bob Rock, and engineer Mike Clink. The work focused heavily on the band's performances, arrangements, and overall sound rather than simply reproducing the approach of its previous album.

One on One was a Los Angeles recording facility used by several prominent rock artists. For Metallica, it provided the environment in which the band developed the album's polished but heavy production and recorded songs such as “Enter Sandman,” “Sad but True,” and “Nothing Else Matters.”

A common confusion is the use of the broader location “Los Angeles” as the answer. Los Angeles is the city; One on One Recording Studios is the specific studio named in the album's recording information.