After all these years.....

I think my wonderful Harman Kardon speakers have a problem. I have been listening to music for weeks now with a slight buzz which is getting worse. :-(
I think I may have to invest in some new ones.

Having said that - they are only about 5 years old and the KEF speakers I have upstairs with my record deck, tuner and amplifier are still fantastic and they must be 30 years old!!!!!!