Occasional hum

It was relatively cheap compared to the rest of the system. I can send it back if it does not work….

This is the quietest my system has been for a while.
Hardly any buzz.

I may have to rethink my cabling inside the BB3. I may not have laid it out optimally to avoid perturbing the signal.
I am going to give the Isotek a go, feeding the pre and phono, and see if that works.

If it is power related, I may have to invest in a bigger/better filtering mains block.

phonos, especially mc's are super sensitive and valves can be to so mixing both can cause issues if there are issues with power emi etc around. i had an issue that turned out to be a mains cable that, although not silly close turned out to be the issue.

I am determined to fix the hum. I built the phono stage, so I want to keep it.
If the power filter does not fix the issue (I believe it will based on the impact the ferrites have had) then I will rearrange my rack, but that will be a pain as the cables are built to length.

I am sure I can make some space around the phono if I need to.

Isotek Evo Gemini is in the house.
I have it plugged in, feeding the phono and pre and for the last half hour, there has not been the faintest sign of a buzz. I hope it continues.

If not, it goes back…

is it still quiet??

So far, so good...

That's good.

Still have to get to the bottom of my ground loop. Not there with my Philips pre but if I put any of my other pre amps in it's like an angry bee.

It’s annoying. Mine got to a point where I could live with it, but ideally wanted it gone.

There's no way I will live with any amount of hum or buzz. Just defeats the whole objective. Might as well just listen through an Alexa or some other piece of crap.