Peachtree Grand X1 question

Looking for an answer from anyone who owns or has owned a Peachtree Grans X1.

I recently purchase a used X1 and I have noticed something that I think is odd. When the power switch on the back of the amp is in the “on” position and the front switch is in standby (green light), is it normal for the two tubes to be on? When I say they are on, I mean that they are glowing and putting out heat. The LED lights below them are off. I would have had two assumptions there, first, I would have assumed that when the unit was in standby mode that the tubes would not be energized. Secondly I would have assumed that the only time that the tubes would be energized was when that circuit was activated from the remote button. Can anyone verify if this is normal or not?  Thanks in advance!