Back to Mono (1958, 1969) is a box set that compiles tracks produced by the American record producer Phil Spector between 1958 and 1969. It was released in 1991 by ABKCO. Initially a vinyl album-sized package, the box contained a booklet with photographs, complete song lyrics, discographical information, and a reproduction of the essay on Spector by Tom Wolfe, "The First Tycoon of Teen." The package also contained a small, round, red "Back to Mono" pin. In 2003, it was ranked number 64 on Rolling Stone's 500 Greatest Albums of All Time.