Synthwerks: PGM-4x4 Programmer/Sequencer
Shown here is the new Synthwerks PGM-4x4 Programmer/Sequencer. The manufacturer writes: "it is a 4x4 pot array that can be chained to 16 columns and stacked to as many rows as you can fit in you cabinet (I'm sure there's a limit but I don't know what it is - LOTS)...
This is the first in a series of modules that will allow the building of a custom sequencer by connecting the modular parts of the sequencer together - Clocks/Stepper modules, Pot and Switch matrixes, Combiners/summers/row switchers. Start small and grow as big as you want. The PGM-4x4 is a combo module mixing a basic Stepper and pot matrix."
Photo credit: James Ersatz.
LINK for more info including a video: muffwiggler.com/forum/viewtopic.php?t=42475 .