Opus - is brand Greencorp Magnetics Pty. / Musicway Corporation Ltd. for Australia market. The company began production in 1971 as Robins Green, then changed its name.

Brand Manufacturer Model Description Type Length Year Made in Market
Compact Cassette Opus 90 Type II Chrome Europe Opus Unknown Type II Chrome 90 Austria Europe
Blister Opus "DH1" Cleaning Cassette 1993 Australia Opus Unknown DH1 Cleaning Cassette 1993 China Australia