Audio Magic Interconnect Signal Purifiers (pair) plug into the far end of your interconnect cables, then into the component input. These devices contain Audio Magic's special mix of Blackout material. The result is a deep black background...dynamics increase, nuance and detail become lit up and the space in your sound expands.
If you use one pair we recommend you plug them into the input of your power amp and other pairs can be added upstream as you see fit.
Also, check out the Audio Magic Speaker Signal Purifiers, which work on the same principle with your speaker cables.