Little Aria rests atop an Oberheim Matrix 12. We also see another Oberheim synth in the background.
The Matrix 12 was one of the great Oberheim analog synths of the mid 1980s, building on the sounds of the OB-X and OB-Xa but with greater programmability and MIDI. In particular, it including “matrix modulation” that can be found in a great many synthesizers today.
The Matrix 12 is similar to the Xpander and the lighter Matrix 6. But [it] is much fatter and more programmable than either. Every control can have an effect on some other parameter thanks to Oberheim’s flexible design. For example, there are 15 types of LFOs and VCAs per voice! And there’s plenty of diagrams drawn out on the front panel of the synth to help you figure out some signal routing.http://www.vintagesynth.com/oberheim/mat12.php