Hi everyone. I have recently puchased a Crown D75-A amplifier to power my Dynaudio Acoustics BM-6 monitors. I must say it sounds sweet! However, I thought the D75-A was supposed to be completely quite, but I have found that my D75-A isn't. It has a low "buzzing" sound. Nothing to serious but enough to annoy me because I have the amplifier on my desk. The sound decreases when I put some pressure on top of the amplifier with my hand. Is this normal for the D75-A or is there somthing wrong with mine? Best regards, Rasmus Nielsen.