Miep returns to CatSynth, this time with a Roland JX-8P. You can see some of Miep’s previous appearances via this tag.
The JX-8P was a follow-up to Roland’s popular JX-3P. Some more info on it from Vintage Synth Explorer:
Though it is far more advanced than its predecessor, the JX-3P, the JX-8P has its drawbacks. Hands-on programming is sacrificed and reduced to assigning the parameter you want to tweak to a data-slider near the pitch/mod bender. Enter the PG-800 controller which gives you total control of all the JX-8P’s editable parameters with hands-on traditional slider control. Membrane buttons dominate the front panel of the JX-8P providing access to the various preset and user patches and to page through and assign editable parameters.