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...
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...