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April 12, 2008 - 9:46am
#1
Rega Brio amp makes loud hummig sound when touched or bumped.
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Get that poor amp to a service shop as soon as possible! There is an intermittent connection somewhere in the circuitry that needs to be found and resolved. From your description of "loud deep humming", I'd guess the intermittentcy is happening somewhere in the power supply (e.g. a filter cap that intermittently opens).
Sounds like a potentially dangerous ground problem. Might get an electrician to check out your outlet and grounding too. Make sure your TT is properly grounded if you use one.