I picked up a set of M200s off of eBay last month for $125. They sounded great, but I did notice a bit of a buzz - not noticeable when the internal amp was turned up and volume controlled by the ...

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 ...