This is the Korg Monotron. It’s a very simple synth by Korg, who is known for sweet sound machines like their Electribe line, the MS 2000, the MicroKorg and more.
It’s an affordable synth, and it’s very compact. It’s cool for making fun warbly sounds, based on the videos we’ve seen. Check out the video above. You can see users turning knobs and making it squeal. Sure, it’s not an Access Virus or a Nord Lead, but it’s a sweet little synth for quick ideas.
You can check it out here.