MOTM

Last evening while making some 'noise' I was wondering if there exists a
cv controller with sliders for 'real-time' interactive use.  That is, an
'ergonomically designed box' with, say, 4 sliders that are shaped and
spaced apart appropriately for finger control, where each slider has a cv
input (e.g., from an lfo or 800) and output (e.g., filter frq. cv).
Anything like this available?  How difficult diy would this be?

Thanks, Jeff