25% (5 of 20) of all devices are in possession of the museum, 25% (5 of 20) of "ROLAND" brand.
- Roland EP-10 EP without hammer action 1973 - 1978
- Roland EP-20 EP without hammer action 1973 - 1979
- Roland EP-30 EP without hammer action 1974 - 1978
- Roland HP-700 ('76) Home Piano 1976 - 1977
- Roland HP-800 Home Piano 1976 - 1990
- Roland MP-700 Stage Piano 1977 - 1979
- Roland MP-600 Stage Piano 1978 - 1982
- Roland EP-09 EP without hammer action 1980 - 1981
- Roland HP-60 EP without hammer action 1981 - 1985
- Roland HP-70 EP without hammer action 1981 - 1985
- Roland EP-11 EP without hammer action 1982 - 1986
- Roland HP-30 EP without hammer action 1982 - 1984
- Roland EP-6060 EP without hammer action 1982 - 1984
- Roland HP-300 Home Piano 1983 - 1985
- Roland HP-400 Home Piano 1983 - 1985
- Roland HP-350 Home Piano 1984 - 1986
- Roland HP-450 Home Piano 1984 - 1986
- Roland EM-101 Piano Module 1985 - 1986
- Roland EP-50 EP without hammer action 1985 - 1986
- Roland HP-100 Home Piano 1985 - 1990
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