The 80s are oftentimes associated with Hollywood-worthy heroism, impeccable style and epic synth music that aged great - as long as it was played on instruments designed in the 70s. Today, however, we are going to talk about K4. This digital synth , Kawai’s answer to Roland’s answer to Yamaha’s DX7 and more upscale successor to the K1 demonstrates impressively that the 80s were - first and foremost - VERY, VERY nerdy.