gold note ph-10 placement

Can the Gold Note PH-10 and the PSU 10 be placed side by side or stacked?


Like with any stand alone ps it's best to separate but they can be placed either side by side or stacked. 

I have placed my PH-10 and PSU-10 side by side with 4" separation. PSU on left side per manual.

Per manual: To achieve the best performance DON'T place the PSU-10 on TOP of the PH-10 but on its LEFT SIDE.
Avoid placing the PSU-10 too close to the PH-10 if possible.