If you notice that the top plate is slightly warped in a downward fashion along the edge adjacent to the armboard, this is normal.

• 播放以前听过多次的唱片，整个声音发生了明显的变化，声音的质感提高不少，小提琴的运弓力度和琴箱的共鸣声明显加强，那种声音是自己非常喜欢的。。。