I have a KX3/KPA100/Powerwerx setup. When I run the rig with the amp on, my Powerwerx 30 amp power supply makes a whirling sound. If I run the rig without the amp, the power supply makes no noise. When I run may K3 it makes no noise. Is there a problem causing the noise?Thanks,Jim W7JHR Sent from Yahoo Mail. Get the app