I have noticed a harshness on S sounds on my new system. I think it decreases slightly as the receiver warms up, but it is still there. The track that particularly stands out for this is Beauty on the Fire by Natalie Imbruglia, during the chorus. Is it my even my speakers, or is my receiver causing the problem? Is there anything I can do to lessen this effect? Turning the treble down just makes highs sound muted, the volume of the S sound decreses but it still sounds the same.