Features HOW IT WORKS: The Schuman generator itself does not make any sound. Just plug in and use. No need to connect to another device. Does not directly act on audio or video products to improve sound quality and image quality. RELAXING EFFECT: Schumann wave 7.83Hz pure sine wave eliminate the frequency of electromagnetic wave and radio wave negative interference, making the sound space stable and harmonious, and the listener can enjoy the music more attentively and happily. STABLE SIGNAL SOURCE: Schuman wave generator adopt DSP signal synthesis technology, which has the characteristics of high signal stability and high frequency stability. POWER SUPPLY: The Schumann wave pulse generator supplies 5V power through the Micro USB port. Mobile phone chargers and power supplies are available. Breathing light indicate operation, can assist sleep. DUAL DIFFERENTIAL POWER OUTPUT: The audio resonator has a dual differential high fidelity drive circuit, which has stronger output capacity, strong output and no distortion of waveform. Specification: 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. Package List: 1 x Schuman Wave Generator 1 x USB Cable Note: It is recommended that the height of the product is 1.5m/4.9ft from the ground, which is more conducive to the coverage of Schuman wave, and the application area of a single product is not more than 18 square meters. Package List 1 x Schuman Wave Generator(random screw style and capacitor color) 1 x USB Cable