The Master 424 Studio C-60 High Bias Type-II Cobalt Cassette from TASCAM is a genuine high bias mastering cassette tape designed for use in studio cassette recording workstations, such as TASCAM's own Portastudio. Featuring a tape formulation engineered and tested specifically in restored, vintage TASCAM Portastudio units, the Master 424 was designed for high-performance and is based upon tapes used to record such legends as Bruce Springsteen, Lady Gaga, Wu-Tang Clan, Beastie Boys, and the Mars Volta.