To add to the above responses.
On startup allow a minute before turning on the amp. This will allow equipment upstream to settle down.
On system shutdown turn volume down on preamp,
turn off amp,
wait at least a minute for power supply caps to bleed off,
then turn off preamp and input source/s.
You could also check to make the amp is not causing a pop by turning on the amp only, wait about 10 minutes and then turn off the amp. You should not hear a pop.
On startup allow a minute before turning on the amp. This will allow equipment upstream to settle down.
On system shutdown turn volume down on preamp,
turn off amp,
wait at least a minute for power supply caps to bleed off,
then turn off preamp and input source/s.
You could also check to make the amp is not causing a pop by turning on the amp only, wait about 10 minutes and then turn off the amp. You should not hear a pop.