ONPA - production of the studio of the same name in Bangkok (Thailand) at the former TDK plant, mid-80s. Since the mid-90s, the same plant has been producing TDK SA series cassettes.

Image Brand Manufacturer Model Description Type Length Year Made in Market
Compact Cassette ONPA AD-X 46 Type I Normal 1990 Worldwide ONPA ONPA Stereo Co. AD-X - Type I Normal 46 1990 Thailand Worldwide
Compact Cassette ONPA AD-X 60 Type I Normal 1990 Worldwide ONPA ONPA Stereo Co. AD-X - Type I Normal 60 1990 Thailand Worldwide
Compact Cassette ONPA AD-X 90 Type I Normal 1990 Worldwide ONPA ONPA Stereo Co. AD-X - Type I Normal 90 1990 Thailand Worldwide