Schitt freya preamp hum- how do I get rid of this?

Maybe PS audio BHK tube preamp would be better than a freya. Although looking inside this it doesn't look that appealing the power supply is exposed and probably parties with all the analog crowd. Not sure why PS audio doesn't do a better quality preamp with a separate power box

I think those early generations Freya are the one that has noise and hum issues, Schiit was able to correct that.The new one are very quiet.

+1 on bad tube. If it’s quiet with SS, it should be quiet with the tubes.

Tubes can be DOA right out of the box.

BTW, how old is it and when did the problem start?

All the best.

JD

It is very likely it wont be as quiet in tube mode as in S.S.  

+ 1 on the advice to change the tube locations (swap them).  

Does it make this humming sound regardless of whether you do anything (no music, no volume, etc.)?  Is it emanating through the speakers only or do you hear something coming from the unit itself? 

It sounds like ground loop hum if it isn't a bad tube.  

With regard to Freya build quality, that's a superb piece of gear. I've been inside it and in my humble opinion it is very well made and perhaps even better designed.