Magnetic Reference Laboratory

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Magnetic Reference Laboratory (MRL) is an American company founded in 1972. They produce and sell calibration tapes^[1] for analog audio magnetic tape reproducers in the open reel format. It was announced on 11 November 2023 that the company would cease business on 1 December 2023.^[2]

On December 7, 2023 MRL announced via their website that the company will in fact remain open, with "new offices, and new leadership, with MRL engineer Jeff McKnight taking on the role of Interim CEO."^[2]