The Stereoping Synth Controller is a custom hardware MIDI controller, designed to bring knob editing to synths with cryptic menu-heavy interfaces.
This video demos the Stereoping Synth Controller Alphaj edition, for the Roland Alpha Juno series. Models for many other synths are also available.
Here’s what they have to say about it:
Instead of struggling with the synth’s built in cumbersome edit-interface, the Stereoping Synth Controller offers 16 dial pots and 3 lighted buttons to shape the sound interactively.
On the high quality, scratch resistant frontpanel you will find a fixed defined parameter set telling you immediately which pot alters which parameter.
Details are available at the Stereoping site.