Thanks Gary, but that's not the problem because as you know, every time you restart the Tyros, it resets all the settings, and nevertheless, even with the compressor and noisegate reset to their on position, I still get the noise.
Secondly, noise gate wouldn't help me, bc when my voice is above the threshold, the noise would seep through ... and that noise is loud enough to be noticed even through the music and voice.
Thanks anyway, Chony