Retroaktiv PG-800 Mini-Controller

pg-800 mini controller for Roland JX-8P, Super JX, GR-77 and MKS-70

available in full kit form, either as external standalone unit or as internal mount unit

The PG-800 Mini is a compact controller for the Roland JX-8P,  and Super JX synthesizers.  It has all of the functions of the original PG-800, plus some new features.  The PG-800 Mini fits perfectly inside the chassis of JX-8P and Super JX synthesizers, measuring just 7.75" x 4.25" x 1.25".   The controller is also compatible with Super JX synths which have the Vecoven upgrades.    The Mini can now also operate in "Vecoven 4.x mode", which adds a Page 2 button, giving hands on control over all of the 40 extra tone parameters in Vecoven 4.x firmware

the product page details are here: retroaktiv pg-800

more information is here: build thread