Simaudio MOON 610LP with Lyra Kleos

It’s more humming than hissing. And while we are st it, what’s the difference in the source and why it won’t go away?

Good mornig, WOW, a lot of replies came overnight :)
Thank you all for your suggestions! 
Just to clarify couple of things: I use Clearaudio Performance DC table with Satisfy Karbon arm (has tonearm cables hard-wired, including the ground wire). Table, arm and Kleos have been used before in a different setup and were quiet. I've also used 610LP in another setup for a few months and it was completely quiet - no hiss, no humm. 610LP is very flexible and is definately compatible with Lyra.
There are no cable boxes, light dimmers, etc anywhere near the setup. 
There is a passive speakers switch box, Luxman AS-55 but once again, it was used in a different setup before with no humming effect.
Speakers are set 12 feet away from the table. 
I've tried to use different cables, different inputs on my integrated amp, connecting and discommecting ground wires from the bearings and/or the arm, turning off (disconnecting mains) all other components in the system except table, phono preamp and integrated - all with no success.
Anything else I should try? But please, anything short of replacing 610LP or the cartridge :) 

Thanks again!
Alex

What what do you think about using a step-up transformer? Bobs Devices have couple of models all with a ground post and use the Moon in MM mode?

It is a new issue. But each one of these components have been used in other combinations, including cables. 

Thank you