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Humming from headphone jack

post #1 of 5
Thread Starter 
I have a Harmon kardon avr and just started to use the phone jack. There is a humming in the background it's bad enough that in a quite ( I mean just above a whisper ) part of a song it's hard to make out what's being sung or anything else. I have tried 2 sets of headphone both the same hum. Is this what you get through a receiver or I have something up with it?
Any thoughts thanks
post #2 of 5
You should not hear a hum. What specific headphones are you using? Do you have the receiver plugged into a grounded outlet? Is it plugged into a power strip or directly into the wall? Do you hear the hum from speakers attached to the receiver, or only from the headphones?
post #3 of 5
Thread Starter 
OK DT990 250 ohms, grounded power strip, at full volume maybe just a hit out of speakers and when I mute hum stops.

Thanks
Just tried plugging into wall and may have done the trick.
Nope spoke to quick it's still there.
Edited by Kozic - 11/17/13 at 2:15pm
post #4 of 5
Sorry - I'm out of my depth here. I suspect some sort of grounding issue, but I really have no idea.
post #5 of 5
Thread Starter 
Pulled out my old Yamaha works just fine on same outlet calling HK now.
Thanks
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