This is a Yamaha Xeno Bb YTR-8335||GS.  This is a professional series instrument for the serious student and it will not disappoint or limit as the student's skills grow.  Yamaha makes some of the best musical instruments.  Xeno is known for clear and crisp tones.  This instrument was purchased in 2014 and only played a few years.  It is in excellent condition.  See the one picture with the single minor imperfection.