When the fundamental tuning fork is sounded with any of the 4 tuning forks (one in each ear), the difference between the two tuning forks creates a binaural beat that can be heard/perceived as a pulse. The difference between the two frequencies must be small for the effect to occur; otherwise, the two tones will be heard separately and no beat will be perceived.

Binaural rhythms subtly influence the brain through the induction of the brainwaves, and can be used to induce the relaxation and other health benefits, such as pain relief.

Differences between weighted and unweighted tuning forks.
Weighted

• These tuning forks operate more on the physical plane.
• It is possible to feel the vibration stronger and at a deeper level when the tube is placed on the body.
• Their sound lasts longer, but is softer and more diffuse.
• They are heavier.
• They are shorter in length than unweighted tuning forks.
• They are excellent for pain relief, reducing the inflammation and inducing the relaxation.
• They are typically placed on the body or near the ears.
• To sound them, you can simply strike them against the palm of the hand or use the tuning fork activator.
• The weighted tuning fork has a round weight at the end of each tube.

Unweighted

• They act at a more subtle level, in a delicate or mysterious manner.
• They move with less physical movement. The sensation of the vibration is more subtle when the tube is over the body.
• The sound does not last as long, but is sharper and clearer.
• They are lighter.
• They are longer than the weighted tuning forks.
• They are excellent for mental and emotional balance, improving the energy field, enhancing the physical health, and promoting spiritual growth, helping to create inner harmony and fulfillment.
• These tuning forks are placed around the body and near the ears.
• To sound them, you can simply strike two tuning forks together or use a tuning fork activator.
• Their ends are straight cut.