YUS Series pianos share many features from our Flagship CF Series pianos. From hand-wound German strings and concert quality hammer felt to meticulous voicing and regulation that brings out a range of colors more reminiscent of a grand piano than a traditional upright. It’s quite simply the grandest sounding upright available. The top ten percent of solid spruce from around the world is hand selected from our Kitami Mill in Hokkaido, Japan for the YUS piano soundboards. The crown is reinforced with full-length, solid spruce ribs for a refined, dynamic tone expected in a grand piano. YUS pianos are voiced and regulated by master technicians in Kakegawa, Japan to ensure that everything, from the strike of the hammers to the weight of the keys and depth of the key travel, are reminiscent of the finest grand piano. Yamaha artisans wind each bass string by hand to the exacting standards and sound profile of every YUS piano at our factory in Kakegawa, Japan. We took everything we learned from crafting the hammers of our flagship CFX concert grand and redesigned the hammers of the YUS to bring out powerful, nuanced tones on an upright piano. Each YUS piano features a proprietary Yamaha tone escapement system that helps provide the clarity of tone and power that is rarely found in an upright. Years of cutting-edge research, including our proprietary wood-drying process, result in durable back posts that maintain their shape, strength and resonance for years to come. Yamaha was the first company to use an advanced Vacuum Shield Mold casting technology called V-Pro to create a stronger, lighter, more durable frame. Every YUS Series piano features a full-perimeter frame built to our exacting specifications at our Iwata Forge in Japan. Often copied but never equaled, the patented Yamaha aluminum action rail helps assure our piano keyboards are resistant to tiny fluctuations in humidity and temperature over time.