The BioResonator Set. Looking suspiciously like a tuning fork on a plank of hollow wood, this is actually an adjustable tuning fork on a plank of wood. Subtle difference see, and all to do with Theta brain waves, sound and banana milk shakes. OK, so we made the last bit up, but you get the drift. $259.95.
“Difference tones” created by the BioResonator are used to align your brain waves for deep meditation, relaxed awareness, problem solving, creative thinking and other benefits linked to specific brain frequencies. The BioResonator™ set uses tuning forks to create specific frequencies called difference tones.