Big crack/pop when turning on/off QC

I’m using QC as my interface with Out 1/2 to Genelec 8330A.
Every time I turn on/off the QC , there will be a massive pop.
Even I connected 8330As which are powered up to the QC which is powered off , the massive pop still exists once I plug in the XLR cable.
I know I should turn off the 8330A first or turn on the 8330A last , but the pop is so massive.
I’m really worried that if my speakers are damaged.
Or is it ok to always keep the QC standby when I’m not using it?

Hey @hszzz,

Please reach out to and they can help you troubleshoot. Thanks!

NDSP recommends to use standby and or mute your speakers etc.