A word about Hz:  In general almost all music instruments are tuned to 440 Hz as it is the industry standard. If you are going to be playing your Vibedrum with other musical instruments (guitars, harps, flutes and such) then you should go with a scale tuned to 440Hz. However if you are going to use your Vibedrum as a personal instrument for music, meditation, healing and/or massage then you should go with the 432 Hz tuning as it is considered by many to be in-line-with our bodies natural energies and vibrations.