Simaudio MOON 610LP with Lyra Kleos

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?

So..a new issue? Can you be more specific as to when you first noticed this issue?

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

Just an idea, I had a hum problem with my center channel and mono amp for driving it. I inserted a Jensen Iso-Max isolation transformer in the interconnect, and 90% of the noise went away. It might be something to try. I have a two-channel analog set up (using the same main speakers, separate tube preamp and SET 300B amp) with no noise issues.

Hope you get it sorted out.
Regards,

Dan

With a step up transformer, you will take a significant hit in sound quality.