[rded]

Originally Posted by Big Daddy

It is possible that your amplifier has become subject to the Barkhausen Effect. That is all we need, another crazy German scientist.

Most of the reports of crackling sound from amplifiers are from people in car audio and tube amplifiers.

http://www.diyaudio.com/forums/showt...?postid=800382
http://www.ssguitar.com/index.php?topic=938.0
http://www.zinky.com/current.html

That's a first for me! What's your prescription for it Doctor BD?