YAMAHA U1 UPRIGHT PIANO. LIKE NEW INSIDE AND OUT. The most desired and popular 48 pro upright in the U. The mighty U1 is awesome with huge resonance and smooth, warm treble. In gorgeous high gloss ebony and featuring slow close fallboard, practice pedal and bench. The highest quality refurbished Yamaha pianos are here at The Pianotek Company. (Flights of stairs excluded).