This Deagan Vibraharp No. 584 is a great instrument. There's a known issue with the Tremolo system. The motor runs, but the pulley system lacks strings, so the Tremolo doesn't work currently. However, the rest of the unit functions well.

Using this Deagan Vibraharp No. 584 is easy. Just start it up and use it like a normal vibraharp, but keep in mind the Tremolo system won't work due to the missing strings. When you're done using it, make sure to turn it off to save power. For maintenance, keep it in a dry place to prevent damage. You can also consider fixing the Tremolo system by adding the appropriate strings if you want it to work.