Mobile Fidelity, also known as MoFi, is a high-end audio equipment brand founded in 1977 in California, USA. The brand's primary focus is on creating premium vinyl records, CD's, and other audio products for music enthusiasts who demand the highest quality sound.

Mobile Fidelity is best known for their "Original Master Recordings," which are made using a unique process that involves using the original master tapes to create a new master for the vinyl record. This process ensures that the sound quality of the vinyl record is as close to the original recording as possible, and allows listeners to hear the music in a way that was intended by the artist.