Question regarding pre-amp and amp


Hello everyone,
I recently bought Don Sachs pre-amp and have a solid state amp. While switching off the preamp it gives a huge sound if the amp is on. I checked with Don and as per him I should switch off the amp before I switch of preamp and switch on the preamp before switching on the amp. The solid state amp has a switch at the back and I don’t think it’s made to switch on and off on a regular basis. How is this normally managed? I am sure tube preamp will need to be switched off and few of you might have this issue.

Appreciate your inputs. Thank you!
sudharl
The sequence of always turning on the preamp first and turning it off last seems to preclude using the trigger feature.  I have mine set up to trigger through preamp, so the preamp turns on and then triggers the amp on, and when I shut it off the preamp turns off and then triggers the amp to turn off.  

Always leaving both on seems like it would shorten their life instead of extending it, wouldn’t you think?
@sgreg1 having a tube preamp, I don’t think it will be a good idea to leave it on. With the solid state I never turned it off until now and now I am having to do it because of tube.

@bob540 how did you achieve the triggering?
My tube pre amp the Freya + allows for me to turn the tube stage off while keeping the pre amp on and that is the procedure I follow.
@sgreg1, I know there are multiple like that. But not my preamp. It’s a very good preamp and wanted to see what options I might have.