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Introduction Schumann Frequency vs Alpha Waves ? Many readers would have heard of the product that started it all, the Acoustic Revive RR-77. Acoustic Revive has recently replaced the RR-77 with the RR-777. Appearing physically similar to its predecessor, the RR-777 promises an improved circuit which boasts a generator that is four times more powerful. Both generate a Schumann Frequency pulse, at 7.83 Hz. Supplied with a switching mode power supply, and a very long DC cable, Acoustic Revive advises that the RR-777 be kept away from other components and be placed at a height of at least 1.5 m. The main unit is made out of plastic, and sports a rocker switch behind, to turn the unit on and off. A single blue LED on the front of the device indicates operation. The LED is bright enough to upset audiophiles used to bat-cave like conditions, but it is not bright enough to be used as a night light ! The light weight of the device makes it perch a bit precariously in high places, and perhaps a