Similar to the Acoustic Revive R777. Purchased years ago from maufacturer on agon. Just plug in and place about 5 ft off the ground by your system.
This is what it does
"According to A coustic Revive scientific theory and experiments, Schumann wave (7.83HZ frequency) can reduce the interference of radio and electromagnetic waves, thereby enhancing the details of the music, enhance the S / N, reduce the standing wave. But also can have a positive video upgrade (vividness and contrast), and people will be affected by the impact of Schumann wave can effectively relax, better listen to the details of the sound"
100.00 shipped in continental U.S. No original box. I will pack it securely
