Do you power on all at once? What is your 'turn on' sequence? Start at the streamer and turn each component on with the amp being the last to come on. Reverse the process for shut down.
Help Needed - Popping sound when powering on a new setup!
OK, need some help. Pretty sure some of you are experts in this area, I certainly am not. Just set up the WiiM Ultra to an external Benchmark DAC2 HGC and then to an IOM Ultra power amp (Hypex NCORE). The amp is powering Monitor Audio Gold GS20’s.
Now I am getting the loud pop when powering it all on. Yes, I will Google potential fixes, but I’m curious what any of you have done to solve this problem. It’s pretty loud. Right now it is happening with the streamer/DAC units connected via COAX.
Currently have multiple set up through the house and I’ve never had this issue, even with a WiiM Ultra--->Benchmark DAC setup, up until now. 
Thanks in advance!