Mobile Fidelity Sound Lab (MFSL or MoFi) is a record label that specialized in the production of audiophile issues.

[1] The company produces reissued vinyl LP records, compact discs, and Super Audio CDs and other formats.

[9] In 2016, Mobile Fidelity Sound Lab launched a new vinyl series called Ultradisc One-Step, releasing titles including Santana's Abraxas and Bill Evans's Sunday at the Village Vanguard.

A second video was produced with Esposito interviewing MFSL staff, where they confirmed that they were using Direct Stream Digital files when creating their vinyl masters for duplication.

[16] In August 2022, Adam Stiles, a longtime customer of Mobile Fidelity Sound Lab, filed a class action fraud lawsuit against the label over the revelations.