The KORG Monotron Duo is a compact, portable analog ribbon synthesizer offering rich, classic dual-oscillator sounds in a pocket-sized design. This used unit is in good condition, fully functional with minor cosmetic wear. It features two VCOs with tunable pitch and cross modulation for fat, edgy tones, plus the acclaimed Korg MS-20-style analog filter for warm, vintage resonance. Its ribbon controller keyboard allows intuitive pitch manipulation and expressive playability. The built-in speaker and headphone output make it perfect for on-the-go jamming or adding analog spice to digital setups. Runs on two AAA batteries and fits easily in your pocket or gear bag. Ideal for synth enthusiasts and creators seeking affordable analog character and hands-on control in a unique mini format.