For those who may have issues caused by the sleep mode or low signal standby feature of the K series amps here are some options.
First, the first two production years had a low or no signal sleep time of only about six seconds, after that it was increased to about 56 seconds. The duration is determined by the value of a ¼ Watt resistor on the input board designated R-15. 6 sec=82KΩ. This can be increased up to about 56 seconds with the use of an 820KΩ. Above this value it won't sleep.
Also should you want it never to sleep, next to the R-15 space is an open space marked Z-1, a jumper installed here defeats the standby mode entirely.
Many thanks to Kevin at Crown and Subwoof for the help.