The Bass Saxophone is among the largest saxophones in the entire family. The Bass saxophone is a very large instrument. This instrument is approximately 100 cm long which is three feet and four inches tall. The instrument weighs nine kilograms which is also twenty pounds. The bass sax is not very common due to its size and its rareness overall. If the instrument breaks or has any problems you will have to travel great distance to get it fixed because there are not many people who know have to fix the bass sax.