Schumann Wave Generator 7.83HZ Ultra Low Frequency Pulse Resonance Signal Audio Resonator USB5V Item Type: Schuman Wave Generator Material: Acrylic and PCB Power Supply Voltage: 5V(USB interface) Rated Current: 0.5A Signal Waveform: Pure sine wave Application: 1. HIFI application HIFI Application Principle: Drive away clutter, purify listening environment, improve people perception = system improvement a. HIFI Speaker System Application: When listening to the environment within 18 square meters, the Schuman wave generator is placed in the middle of the two speakers, slightly behind the position, if conditions are recommended to be placed in 1.2-1.5m/3.9-4.9ft height, the prevent vibration treatment of Schuman wave can increase the effect. When the listening environment is greater than 18 square meters, it is recommended to buy two Schuman wave generators, which can be placed above or beside the box, and other requirements are the same as above. b. HIFI Headset Amplifier System: Since only headphones are used for listening, the only thing left in principle is improving human perception, and the effect is greatly diminished, but it still exists. 2. AV films and paintings The number and location of the required Schuman wave generator is consistent with the HIFI application, and four Schuman wave generators are recommended for use over 40 square meters. 3. Sleep Aid: There are individual differences. Some people use the product for the first time, and the quality of sleep in the second half of the night is not very high. After a few days of adaptation, the user can achieve deep sleep. Long term use of this product will be more significant. 4. Create: Often used in calligraphy, painting and designers. Can calm the mind (recommended for office use). 5. Other Instructions: Researchers in the fields of meditation, martial arts, cultural studies of The Book of Changes, biology, medicine, etc.