83.3% (5 of 6) of all devices are in possession of the museum, 83.3% (5 of 6) of "ROLAND" brand.
- Roland CA-30 Arranger Module 1989 - 1992 MIDI
 - Roland RA-30 Arranger Module 1995 - 1999 MIDI
  - Roland RA-50 Arranger Module 1989 - 1992 MIDI
- Roland RA-800 Arranger Module 1997 - 2000 MIDI
  - Roland RA-90 Arranger Module 1992 - 2000 MIDI
 - Roland RA-95 Arranger Module 1995 - 1998 MIDI
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Arranger Modules