This astounding tone generator uses 4 harmonic frequencies of a lower tone.

When you hear the harmonics, your brain imagines that the lower tone is present!

This allows you to create tones in your mind only, that are lower than your speaker can even produce.

This is a fantastic way to create incredibly powerful Isochronic beats.

These beats are more powerful for brain entrainment than binaural, and do not require stereo headphones.

It is even possible to create a tone too low to hear, that you can still feel!

I'm pursuing a patent on the tech!