Power strip for sequenced preamp/amp turn on and turn off?

Mr. Miller,
Thanks for the response, which assuages my concern.  My tube preamp and amp were made by Don Sachs and he just got back to me with his preferred solution, alleviating the potential of this noisy problem when, on very rare occasions when I reverse the power-up sequence of the preamp and power amp.

The solution is this:  Don and I both have the same commercial Powervar power conditioner.  He informs that I should connect both his preamp and power amp to the Powervar unit, leave both the preamp and amp switched on, but turn them on and off (simultaneous) with the switch on Powervar unit.    I am happily listening to music this afternoon so at the end of my listening session, I will reconnect the preamp and amp thusly.

Thanks again for your response... there are so many helpful folks on this forum.  Mark

Gents,
I reconnected my amp and preamp to my power condition with the power conditioner turned off, and then powered up them up with the switch on the power conditioner and there was a gentle startup with zero noise.  One switch handles is all with no need to reach behind the rack to get to the back of the amp in the back of my rack.  It is an elegant and simple solution.  It is Occam's Razor... 

APC  H 10 owner’s manual :
´´ Sequenced Turn On/Off
Ensures connected equipment is powered-up/down in the proper order and with the right amount of delay between the stages. This feature allows the user to program a delay into the sequence between 0 and 12 seconds. This delay feature eliminates transients that can affect connected components. ´´

That is a fine feature, thanks for the suggestion.