Here is the statement from Revo:
"According to Revo, the consumption in standby mode is 0.6 to 0.8 W, depending on whether the screen is switched on or not. Consumption via LAN or WLAN is the same."

Unfortunately, no manufacturer's specifications are known. Other network radios and speakers need between 2.5W and 5W in standby. I don't think it should be much different with the Revo Supersystem. WLAN or LAN connection should also not make a big difference in power consumption, but that's just a personal assumption.
Unfortunately, we can't measure it. But maybe our Revo supplier can find out something.
I would report back here as soon as I hear something.