- +++ 1962-3.f. Revere M-2 - world's first çontinuous play" cartridge recorder
- +++ 1963.a. Philips EL3300 - world's first "compact-cassette"recorder - the classic starting point of "cassette" era
- + 1969.f. Telefunken CC Alpha
- ++ 1965.b. Telefunken M401
- 1951.b. Loewe Optaphon 51 WAP
- +++ 1965.a. Grundig C100 - first DC cassette recorder
- ++ 1964.f. Norelco 150 - first compact-cassette (TM) recorder made by Philips for USA