Audiophiles have known for years that the power coming through the AC line is full of interference and line disturbances that degrade audio reproduction. With today's digital circuitry and especially with digital video, polluted AC power can cause poor quality sound and picture. The detrimental effects of dirty power cannot be removed by ordinary surge protectors. Monster's Clean Power Circuitry Stage 2 v.2.0 filters provide excellent AC power line noise rejection. This results in the best possible sound and picture from your components. You'll enjoy a more natural sound with increased dynamic range as well as the most vivid image possible. Prevent Thousands of Dollars Worth of Potential Damage to Your Sensitive Electronics from AC Electrical Surges and Spikes.