I have 2 older Berninas, the 1031 is very quiet, the 930 makes a clicking sound as it cycles; that's normal.
When I was sewing with the Pfaff 1222E, I noticed that its noisier than the 1031; all of them sew beautifully. The Viking Sapphire 875 is 4 years old and a lovely plastic wonder, after sewing with antique treadles, it just seems like too much machine.
Sharon