Michi P5 Preamp Tone control Distortion


Help 
Previewlordrootman
Thanks for the response @imhififan 
when I enable tone control and there’s nothing playing I can hear high distortion from both speakers like 8-10 feet away 
When I disable tone control preamp is dead silent I have try 3 different amps different plugs different power cords
the only is disable or turn off  tone or zero volume I have try 5 different sources all the same 
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When I disable tone control preamp is dead silent I have try 3 different amps different plugs different power cords
the only is disable or turn off  tone or zero volume I have try 5 different sources all the same
You did all diagnose, time to send it for service/repair

http://www.rotel.com/service