The A=432 hertz tuning fork is based on the Pythagorean spiral. At Biosonics, we encourage and support you to mindfully experiment with different sounds. The best way to understand the effects of sound is to listen and observe how the sound affects your mind and body. Discussions on ideal tuning systems have been going on in every culture for thousands of years. As it turns out there are literally thousands of different ways to tune an instrument, and thousands of different arguments for and against different tuning systems. We would prefer you have the opportunity to directly experience the sound, and then learn about the qualities others ascribe to the sound.