Oberheim Perf/X Systemizer

via this auction
"The SYSTEMIZER is Master MIDI control center and memory bank that allow you to create and store a wide variety of MIDI keyboard (or other instrument) setups that can be as simple or elaborate as you want.
The SYSTEMIZER also allows extensive PEDAL control - four locally thru rear panel phone jacks, and 4 via MIDI.
The SYTEMIZER allows you to recall any setup between Master and Slave instantly and performs many functions that instruments cannot do on their own. For example the SYSTEMIZER permits multiple SPLITS even if your instrument doesn't have that capability.
Layering, crossfading, fixed or floating split point, mono or polyphony and more can be stored in one of the 32 Setups. A port for an optional memory card is provided. If you use many MIDI instruments, sequencer, computer, FX and more, the Systemizer will do things you never thought possible, or only wished you could.
Some of the Factory Presets:
4 way Layer, 2 and 3 way splits, pressure crossfade, positional crossfade, velocity switching,aftertouch carossfade, stacked fifths, detune by pedal, etc." box shot