Chrisoft::RBUSIF

Information on R-BUS / RMDB 2 and my related projects.

Projects and technical information provided on this page and all linked pages are not approved or endorsed by Roland.

R-BUS (also called RMDB2 / RMDB II on older products) is an obsolete proprietary interconnect format that carries bidirectional MIDI and digital audio data created by Roland. It was used on Roland products released from the late 90s to early 2000s. (Excerpt from the detailed information page)

For more detailed information on the R-BUS format, including electric and signaling specifications, please visit this page.

A (currently very short) list of my projects related to R-BUS:

Name	Image	Description	Resources
RBUS-ADAT		Record your XV-5080 without the cable clutter! This handy little board converts the 8-channel digital output on the XV-5080’s R-BUS port to the ADAT lightpipe format for easy recording with modern equipment.	Project Repository Manual devlog

Important update: As of January 23rd 2025, I no longer stock parts for the first generation design. Unless you have already been in touch with me, the only realistic way to get the board is DIY. A second design that makes use of rp2040 will be made, hopefully some time soon.

Contact me!