Hi thanks for the replies.I found some resources on the internet last night in regards to proper amp usage and maintenance.It was stated more than once that when turning on the amp the sequence is standby then power but when turning the amp of you don't worry about the standby,
you just switch the power off.Aparently "this lets the still-conducting tubes bring down the high voltages in the power supply".Some web links are
www.geofex.com/tubeampfaq/taffram.htm under Basics of
tube amp use and
www.drifteramps.com/safety.html under Standby.I have always hit the Standby first before power when shutting down my amp but according to these amp guys I did the right thing by just shutting down the power,even though I experienced that thumping sound when I did.
I would be grateful for any comments,opinions on this subject.Thanks and take care.
Sean