Schiit Freya Thump or pop sound


Hi guys just a quick question for anyone ,I just purchased a Schiit Freya thats being used with Mcintosh mc452 and D150.Using xlr and each time I power off the unit I get this loud Thump sound through my Wilson Sophia 3 speakers.The thump also can be heard through my dual subwoofers .I love this preamp but that noise is annoying.Ive tried muting before power off ,volume is always set to lowest.Just curious if anyone else is getting this ,Thanks for reading .
128x128superwhite50
Turn the amp off BEFORE the preamp as that should render your system thumpless. 
@wolf_garcia is correct.

Turn on source, pre-amp, power amp. 
Turn off amp, pre-amp, source.

If you follow that order, you should have no issues.
Turn on sequence =  source, pre-amp, power amp.
Turn off sequence =  power amp, pre-amp, source.

+1 This should be is written in stone in the audiophile bible 

Cheers George
01-27-2019 1:03pm
Turn on sequence = source, pre-amp, power amp.
Turn off sequence = power amp, pre-amp, source.

+1 This should be is written in stone in the audiophile bible

+2