Where is the hum coming from? The table itself or through the speakers? Your post suggests the table. Try moving the Phoenix products away from the table. Also, try plugging the Phoenix into another power outlet.
Phoenix Engineering speed control
I purchased the Phoenix Engineering speed control for my VPI Classic 3. I purchased the bigger power supply and the tachometer combination of the speed control. I notice that I can hear a steady hum coming from the speakers when the speed control us turned. The hum is constant and will not vary if I turn up the volume on the Preamp. But the hum goes away when I turn the turntable off. The hum return when I turn on the turntable again. I even in unplugged the interconnect from the turntable, but it make no difference. Does anyone with the Phoenix Engineering speed control experiencing the same issue?