Hello,
Not sure if it is just a user setting (can't remember) but my 9100ES turns off automatically after maybe twenty minutes or so when there is no activity. All I usually do is turn on the power supply a half an hour prior to use and then turn on the player when I'm ready to listen. It usually takes another half an hour of playing before the sound really comes alive

!!!
I have also had the PS9.0 upgrade done and it is like having a new player all over again. Things really changed the more I listen and the new upgrade has made a positive improvement in sound. I believe you will happy !!!
As for tubes, I am currently using an older Bugle Boy GZ34 in the PS9.0 and a pair of Tung Sol 6900's in the unit. So far this is the best sounding combo of tubes I've tried yet along with my LS36.5, which I am using a Philips MB GZ34 and a pair of 6H30-DR's. Speakers are Dali Helicon 800's and a Pass Labs X150.5 amp.