Yamaha Makes YC Stage Keyboards Even More Compelling with OS v1.1 Share Article The YC Series brings classic drawbar organ and authentic keyboard sounds to the stage and studio alongside stunning acoustic pianos, and OS v1.1 adds even more Voices and features. “YC OS v1.1 is a direct response to feedback we’ve received from our users. By listening to our customers, we make great keyboard instruments even better,” says Nate Tschetter, manager, Synthesizer Marketing, Yamaha Corporation of America. BUENA PARK, Calif. (PRWEB) January 14, 2021 Yamaha today announced YC OS v1.1, the first OS update for its popular YC Series Stage Keyboards. The YC Series brings classic drawbar organ and authentic keyboard sounds to the stage and studio alongside stunning acoustic pianos, and OS v1.1 adds even more Voices and features — all backed by the no-compromise quality that makes Yamaha the first choice of keyboardists everywhere.