It makes a big difference man. With just the receiver the sound was strained at reference levels, but adding the M-200 has totally opened up the center channel. Everything that comes through it is crystal clear, effortless. I have had amps from B&K, Krell, Mac, Rotel, you name it. The M-200 is well worth the price; I couldn't recommend it enough.BTW, I watched Shrek 2 earlier, and the song in Fiona's bedroom does have a distorted sound, but it is intentional. Also the scene where Shrek is riding Donkey up to the castle, the sound from the rear left does go straight to the center as they pass by. It seemed natural, and I didn't find it distracting. Hope that helps.