- ++ 1982 h. Shebro PB-1 - microcassette player + FM radio headset
- +++ 1983.j. Sony Betamax - digital profi audio cartridge
- +++ 1984.j. Nagra JBR cassette
- +++ 1982.g. Sony U-matic - digital profi audio cartridge
- 1985.a. Philips D7547
- ++ 1984.i. Sanyo RD XM-1
- + 1984.a. Philips D6550
- + 1984.b. Philips D8444
- 1984.e. Sony WM-F45
- ++ 1984.f. Sony MTL-10
- + ca.1984.d. Electromureş - Corina
- + 1984.g. Philips D6350
- ++ ca.1983.a. SCOLE ENGINEERING - medical recorder
- ++ 1982.c. Sharp CE-125
- + 1982.b. Clarke & Smith CS1