The Korg ARP 2600 FS is a powerful and versatile synthesizer that offers a wide range of features for creating and manipulating sound. With its two-voice polyphonic dual-memory circuitry, the 2600 FS allows you to play two completely separate music lines, with different sounds for each line. The keyboard also has a built-in low frequency oscillator (LFO) that can be used to create vibrato, tremolo, and other effects. Additionally, the 2600 FS has a variety of inputs and outputs that allow you to connect it to other synthesizers, effects pedals, and recording equipment.