12% (3 of 25) of all devices are in possession of the museum, 12% (3 of 25) 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 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 EP-50 EP without hammer action 1985 - 1986
- Roland HP-20 not yet sorted 1990 - ??
- Roland EP-3 EP without hammer action 1990 - 1993
- Roland EP-5 EP without hammer action 1990 - 1996
- Roland EP-7E EP without hammer action 1990 - 1993
- Roland HP-2700 EP without hammer action 1990 - 1993
- Roland EP-7IIe EP without hammer action 1993 - 1996
- Roland EP-9 EP without hammer action 1993 - 1996
- Roland EP-9e EP without hammer action 1994 - 1997
- Roland EP-85 EP without hammer action 1997 - 1999
- Roland EP-95 EP without hammer action 1997 - 1998
- Roland EP-75 EP without hammer action 1998 - 1999
- Roland EP-77 EP without hammer action 1999 - 2002
- Roland EP-97 EP without hammer action 1999 - 2004
- Roland EP-760 EP without hammer action 2002 - 2006
- Roland F-30e EP without hammer action 2002 - 2003
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