I have two seperate power amplifiers with 3 prong chords. When I connect the amp to the speakers I hear a noticable hum/buzz that comes through although when I play music at low volumes, its not ...

Ok I thought this problem was due to crappy shielding on my speakers, but I heard the hum when I had my headphones hooked in so it must be something else.<P> What happens is whenever my Tv tuner is on ...