Thanks Wyatt but you're actually confirming what I had read.  With a tube rectifier a standby switch isn't needed due to it's slower warmup time compared with the almost instant (? - much quicker) solid state device.  When these are used you would have an argument with other electronic experts I know about the powering off procedure!  Not me because I haven't got the the knowledge!
I have spoken to Nik about this subject and he has agreed that a standby switch isn't really needed with the Ceriatone all-tube amps.  It's just "tradition" he put it.  It is also not needed for low power amps such as the 5 watters even with solid state rectifiers.  This info is from a guy who designs and sells amp kits, which are solid state rectified, but have no standby switch - even with 18Watt "Plexi" clones.  About his 5 watt kits not needing tube rectifiers he said there was no need "..because there's no sag in such amps."  I guess that will mean more to you than it does to me!

I'm a newbie who knows his way around point-to-point wiring with a soldering iron,    but with a very limited knowledge of electronics.  I always thought that a standby switch was only used with a solid state rectifier but shouldn't be used with a tube amp.  I've even read that you should not have one on an all-tube amp.  Opinions please    By the way, isn't Nik brilliant at answering questions at any hour of the day or night?  One time is was later than 2am his time! Cheers, Lionel