The Tentij Optical Reed Bass (ORB MK1) is a fully analog, two-octave bass piano that captures the character of a vintage Wurlitzer in a lower register. Ideal for basslines with a distinctive low-end growl. At the heart of the instrument are optically amplified carbon-fiber reeds, paired with true hammer action. This combination gives the keys a light yet responsive touch and produces a deep analog bass tone. Tuning is easily done from the outside with the included tool, no need to open the instrument. The ORB MK1 comes with a ¼” jack output (line-level), USB-C port, and tone and volume knobs with color-coded LEDs. All this makes it a versatile and studio-ready instrument that is surprisingly compact. Each ORB MK1 is handmade with careful attention to detail. Its vintage-inspired exterior reflects the classic roots of the instrument, while the innovative internal mechanism features a fresh, modern approach to electric piano design: old-school aesthetics with new engineering.