Hey April, if you have dry air, you will be doing your instrument good to get a dampit. 30% is low humidity, so that is a definitely a trigger that would should get one. I wouldn’t say it would improve the sound of your instrument, but it will prevent it from cracking and damage which you definitely wouldn’t want. If you look at it from the standpoint of how your instrument would sound if you did have cracks, it definitely would make your instrument sound better from that! Sometimes a violin can even be unplayable when it has enough damage from cracks.