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Mu metal for Brio Integratdd

Hello All

Last year I bought latest version Rega Brio integrated. I paid 300$ and I’m very pleased on how it powers my Tekton speakers. One issue though. Hummmmmm. I confirmed through audio tech and searching forums the small 1/2 size chassis contributes to this issue. I tried several recommendations for confirming it’s not ground loop issue or issue with house wiring or from other components…..I was tempted to purchase some MU metal and enclose the top and sides of the toroidal transformer. Has any one attempted this on the Rega integrated or other amps? Did it address the problem? Any advice on doing this mod?

pdspecl
mlsstl
1,439 posts
 

How did the certified tech explain the hum?

pdspecl OP
254 posts
 

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

mlsstl
1,439 posts
 

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.

pdspecl OP
254 posts
 

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

pdspecl OP
254 posts
 

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?

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