Expansion cards for various Roland synths:

• JV-80, JV-90, JV-880, JV-1000, JV-1010, JV-1080, JV-2080
• JD-990
• Fantom FA-76
• XP-30, XP-50, XP-60, XP-80, XV-88
• XV-3080, XV-5080

There are demos of all of the sounds on the Synthmania site, but they're buried and don't seem to be linked or turn up in searches, so I've put links here. Roland also released demo CDs, that have axamples from a seletion of the patches.

• SR-JV80-01 Pop https://www.synthmania.com/sr-jv80-01.htm
• SR-JV80-02 Orchestral https://www.synthmania.com/sr-jv80-02.htm
• SR-JV80-03 Piano https://www.synthmania.com/sr-jv80-03.htm
• SR-JV80-04 Vintage Synth https://www.synthmania.com/sr-jv80-04.htm
• SR-JV80-05 World https://www.synthmania.com/sr-jv80-05.htm
• SR-JV80-06 Dance https://www.synthmania.com/sr-jv80-06.htm
• SR-JV80-07 Super Sound Set https://www.synthmania.com/sr-jv80-07.htm
• SR-JV80-08 Keyboards of the 60s and 70s https://www.synthmania.com/sr-jv80-08.htm
• SR-JV80-09 Session https://www.synthmania.com/sr-jv80-09.htm
• SR-JV80-10 Bass & Drum https://www.synthmania.com/sr-jv80-10.htm
• SR-JV80-11 Techno https://www.synthmania.com/sr-jv80-11.htm
• SR-JV80-12 HipHop https://www.synthmania.com/sr-jv80-12.htm
• SR-JV80-13 Vocal https://www.synthmania.com/sr-jv80-13.htm
• SR-JV80-14 Asia https://www.synthmania.com/sr-jv80-14.htm
• SR-JV80-15 Special FX https://www.synthmania.com/sr-jv80-15.htm
• SR-JV80-16 Orchestral II https://www.synthmania.com/sr-jv80-16.htm
• SR-JV80-17 Country https://www.synthmania.com/sr-jv80-17.htm
• SR-JV80-18 Latin https://www.synthmania.com/sr-jv80-18.htm
• SR-JV80-19 House https://www.synthmania.com/sr-jv80-19.htm
• SR-JV80-97 Experience III https://www.synthmania.com/sr-jv80-97.htm
• SR-JV80-98 Experience II https://www.synthmania.com/sr-jv80-98.htm
• SR-JV80-99 Experience https://www.synthmania.com/sr-jv80-99.htm

Demos from Expansion Audio Demo CD III: http://www.nathansheldon.com/xp-80/expansion-board-demos.html

• Images of boards 1-19, 97-99 and a 1 custom: https://app.box.com/s/o5esgwsyp26fta61wrnm6hrgdhno7pad
• Images of boards 1-19, 97-99: https://comfybox.floofey.dog/resources/roland-sr-jv-expansion-board-dumps.251/
• Manuals for boards 1-17: https://drive.google.com/drive/folders/0BwbJMWoSOroQc3luMUJFbm5SVXM

• Sector101 SR-JV Romulator | https://www.sector101.co.uk/sr-jv-romulator.html - Rewritable expansion board.