Mu metal for Brio Integratdd

I would look at how your equipment is tied to the electrical grid.  Odds are it is leakage from the AC line to chassis to interconnect shields.  If you have one power cord it won't matter but if you have two it is guaranteed you have a ground loop.  Have a power cord with three prongs and you have a bigger ground loop.  UL is great for not getting shocked but they are very unkind to high end audio - their excessive leakage limits really screw things up.

Trying to fix hum leakage with shielding is expensive and marginal at best.  The reason is you are treating symptoms and not the cause.  The beat approach is to separate the transformer from the electronics physically with distance but if the transformer is internal, that isn't possible.  Distance cures the hum radiation field, but there should be very little radiation with a torridal transformer.

You might try a medical grade isolation transformer between the wall outlet and  your system, then make sure all earth grounds tie to one spot and only one spot.  If you have equipment with two prong power cords, connect a ground wire from the chassis to the common earth ground.  That will cure the leakage problem.

I tried most of what was suggested.   I also removed all components except the Brio integrated amp.    Still have the hum.    I’ve had many other combinations of components in the same room and never had a problem.  Tube amps, solid state amps…. All kinds of gear and different configurations. No issues until I got this Rega.   Also I checked and it appears other owners noted the same issue with their units.   

You bought a $1K amp for $300, so sounds like you picked up a used unit. Have you considered the possibility that it needs service? Could be a bad capacitor, a bad internal connection, or some other problem that needs professional technical service.

Good point.   I did bring it to a certified tech who gave it a clean bill of health so to speak.   I may try the mu metal as per Amazon for a sheet at about $60.  Worth a try so to speak

How did the certified tech explain the hum?

Actually I had two techs look at it and both stated the close confines of the components in the 1/2 sized chassis is the likely culprit

I remain confused. I can't imagine a well respected manufacturer releasing an amp with audible hum.  Don't know which Tekton speakers you have, but do know they are a bit more sensitive than many speakers, but hardly anything over the top in that area (like horn loaded speakers.)

I've had a number of "half size" amps (Bel Canto, VTV, Schiit) and none of them have exhibited any hum, even with my ear next to the speaker. And I've always heard nice things about Rega products.

Sounds like you either have a defective Rega or, for whatever reason, it is just a bad match for your setup.  If I were you, I'd be moving on at this point.

I did some research and there are others noting same issue with this particular Rega.    I will try the MU metal since I’m curious if it could improve the situation.   If yes then I’m good to go.   Else I may switch to a Schiit amp set up

I joined a Rega forum on Facebook about my hum issue with the Brio.   Within 30 minutes 4 other Brio owners noted same issue and it’s definitely the unit and not related to ground loop, wiring, or other components.  Looking at the Brio everything is so closely packed and I don’t that I can make a MU metal cover for the torodial transformer and make it fit properly given the close proximity of other components.  I was tempted to order a a small case from parts express and relocate the transformer to an external case and shield that case with MU metal.   Costs would be minimal.   Comments?

cannot hurt but if the hmmm continues you may have other issues  I can repair if necessary.