The Korg PS synths are fully polyphonic - meaning that you can play all 48 notes at once! Each voice of the 3100 is a single oscillator, but the Ensemble effect adds a lush thickness, and the filter sounds nice. The PS-3100 (pictured) has a built-in keyboard; the PS-3200 is a semi-modular synth that is the equivalent of two PS-3100's, and the PS-3300 is the equivalent of three PS-3100's!
