A Somatron is a device that produces a vibrotactile effect when connected to a sound source. Vibrotactile here means physical vibrations felt by your body.

The wonderful soothing vibrations relax tight muscles and stimulate circulation throughout the entire back, spine, and legs, which result in relief of muscle tension and deep relaxation. You must take the time to try this fascinating relaxation therapy and relaxation training.

Music is a MUCH more powerful tool to achieve the MIND/BODY connection than mechanical vibrations.  Mechanical vibrating devices only work at one speed at a time.  Somatrons vibrate at many speeds simultaneously because their driving source is music.  Each musical note played by each instrument comprises several speeds of vibrations.  On a Somatron you feel a variety of speeds of vibrations at the same time.  In addition, as these vibrations move from speaker to speaker, you will experience a rippling sensation.  Waves of vibrations will move throughout your body, and it's one of the most wonderful ways to relax.