What I have fond out about these Feedback Stabilizers is they sound better with silver plated interconnects and speaker cables, a friend of mine told me about some (real sleeper cables) Tsunamic (Ultra interconnects)$39.95 and (Competition Series) 12 GA. silver plated speaker wire $1.50 per foot, you can buy these at Circuit City in (Car Audio)(in the stores only, not listed on Circuit City web page). I really like the sound of the feedback stabilizers with these cables!.........Richard