The Korg RK-100S 2 is a keytar (keyboard/guitar hybrid) synthesizer released by Korg in 2018. It is the successor to the original Korg RK-100S, released in 1983. The RK-100S 2 features a 37-note velocity-sensitive keyboard, a ribbon controller, and a built-in vocoder. It also has a variety of sounds and effects, as well as a USB port for connecting to a computer.