im not sure that these cords are the solution either. I have the system in an office/listening room. there is a lot of equiptment plugged into one circuit. Maybe this is why the power conditioner he sent me home with helped. I dont know if RFI/EMI is my problem as i am new to the hifi world. The really big improvement was in the bass in the system, before i had the conditioner there was bass but no emotion if that makes sense. With the unit plugged in the conditioner the bass was alive. I hope this makes sense and i dont sound like a lunatic. This is why i have ventured into researching power cords and conditioners. The only thing i have come accross that makes sense is balanced power, it just makes sense to me. The power cord thing is a mystery to me????