MARK LEVINSON Mark Levinson Presents... (1979 US dbx encoded 8-track audiophile LP - a 'collection of individual music instrument recordings and selections from jazz and classical repertoire' - intended for use with a dbx disc decoder and presented by Levinson, a specialist in high-end audio. Housed in a glossy gatefold picture sleeve detailing the DBX process inside, in mint condition along with the vinyl RTS-1)