Middle and low grade. In Yamaha, Series A is called stage Series, so whether it is Nissan's a 1r, a3r or a5r, their appearance is the same, and they are all designed with missing corners. The code and fingerboard of A3R are ebony, the strings are Illex brass strings, the neck is mahogany, and the knob is closed. The price of Yamaha A3R is around 7400.