Hello,and thanks to all of your suggestions,but I did not make it clear about this humming sound.This sound is not audible with musik what so ever,what I meant is that when the volume is turned all the way up with out input signal I could here some light hum.The transformer sound or hum is heard when the amp is on,but you have to be close in order to hear...I heard it through the grapevine that most of the time Mcintosh transformers usually never go out.What do yall
think?
think?