Since I don't know the JV-1080, I can just comment based on my experience with the Roland Fantom and the Edirol units I have used. If you are able to hear MIDI chords in GM mode, then you have set the correct mode for the higher patches as well. The other mode is for solo use (one voice alone). On my Fantom, the correct mode for BIAB is Performance.

In BIAB, I do NOT send GS or XG on startup (in the GM menu, Roland GS or Send MIDI Message). Nothing is checked for Send or Auto-send.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.