Question: what is the difference between a xylophone vibraphone and marimba?
Answer: “What's the difference between a xylophone, a vibraphone, and a marimba?” ... Vibraphones have bars made of metal rather than wood,and thus the bars on a vibraphone sustain far longer than those on a marimba or xylophone; this is why vibraphones have a damper pedal (similar in function to the damper pedal on a piano).