Thanks for giving some thoughts.
Turn on all the time is absolutely NOT an option, I only use HT system for weekend, Friday and Saturday. It's kind of uncomfortable to look at all the green lights on without any signal going through.
I've heard of solution of buying a power center which has a delay power on, but I have no more room on the rack now. If I do, I prefer to replace the 9B-ST by set of 2 3Bs and 1 2B, personally, I like the sound from the old, obsolete, beat-up 3B more much than 9B-ST. I already prepared for this change some time ago, but can't carry it out, still undecide which piece has to go !!!