Originally Posted by dsw1204 View Post
I am a little curious why you are not letting us know what is going on. You tell us you have issues with your amp, but you don't elaborate. Why the secrecy?

I did not know the Z-LX series had two different type of gain knobs. Does it make a difference?
When I get more details I will let you know. I just know the issue follows metal gain knobs and higher serial numbered 150.6LX. I have not seen any other models affected but I have asked anyone with 150.6LX amps to send me gut shots so I can try to narrow down when the issue started.