Our popular Schumann resonance sound quality improvement device has been redesigned as the RR-777, with even greater effectiveness. Dimensions: W140 x D170 x H50 mm (5.7" x 6.7" x 2.0") Input Voltage: 12V Ultra-low frequency generator. Click here to view the product page (external site). Click here to view the product page (external site). Features: Our popular Schumann resonance sound quality improvement device has been redesigned as the RR-777, with even greater effectiveness. Dimensions: W140 x D170 x H50 mm (5.7" x 6.7" x 2.0") Input Voltage: 12V What is the Schumann resonance? It is a 7.83 Hz resonant wave generated by the Earth between its surface and the ionosphere. It was discovered in 1954 by German physicist Dr. W.O. Schumann. This phenomenon has been occurring since the Earth's birth and can be called the "breathing of the Earth." Research has shown it has a significant beneficial effect on the brain. Since the creation of the Earth, all living things on Earth have lived under the protection of the Schumann Resonance. However, in modern society, radio and electromagnetic waves are disrupting or obscuring this, causing various adverse effects. Our research began with the question, "If the Schumann Resonance has a beneficial effect on the human brain, how does it affect hearing?" We discovered that it has an even greater effect, both acoustically and visually, than we had imagined. We developed a device that artificially generates 7.83 Hz radio waves and commercialized the "RR-777" ultra-low frequency transmitter (patent pending). The RR-777 transforms your listening room into an airy, clear sound field, recreating the realistic sound of a stage where every instrument is unleashed. These effects have been recognized by musicians and recording engineers, and the device is used in recording studios, mixing rooms, mastering rooms, and more. ■Product Code: 4939325153299