Krell KSA100 doesn't stop upon shut down?

IS this common for Krell or everything? I have never had an amp keep playing after the power is turned off.?

Actually, that's an indication that you have big capacitors...since they are holding the charge. When all the power is expended, it doesn't work anymore.

This happens with my SS mono amp and VAC Sig MKIIa preamp ... perfectly normal.

Well, when I turn on my Classe amp there is a slight delay before the amp is ready to play (I can hear a click inside the amp - like a relay closing) So, when it is turned of there is also a click noise inside (about 2 or 3 seconds) after I flip the power switch. I think once you push the power button of, it must seperate the output from the input. I always turn the amp OFF before anything else, but I also mute the preamp first. Maybe sometimes I forget thought- Why are you turning off the amp when it is still getting a signal?

Thank you all for the helpful advice.

6550c, my KRC3 preamp doesn't have an on/off button and my Hybrid CD player I usually leave on to save the warm up time hence if I don't stop the CD from playing, the signal is there. In any case, I indeed usually stop the CD from playing before turning off the amp.
BTW, the only reason to turn the KSA off is obviously its Pure Class A power consumption...