Hello, KF

The XP30 and the JV1010 have all the internal waves and preset patches from the JV2080 (banks A to E), and have additional ROM with the waves/patches from Session (JV1010) and Session, Orch I and Techno (XP30), but these sound are built in, and not in form of a expansion board, so you can't remove then. The JV1010 have 1 more expansion and the XP30 have two.

Mgomes