It sounds like new age voodoo to me. If vibration can help to increase tonal properties in wood products, then why not just keep your instruments exposed to vibration by setting them next to your stereo speakers, television, radio... turn up the volume and let the vibrations do their thing. No need to spend $$$ for an electronic gizmo to do the same thing that you can do with a few of your favorite Cds, Lps, cassettes, 8 tracks, 45s, 78s, Edison cylinders, DVDs, VHS tapes, television shows like re-runs of Dick Clark's American Bandstand...