HELP! I have the popping noise too on my McIntosh MA6900. When I flip the power switch on, a slight pop goes to speakers. When I turn on the standby, a very loud pop goes to the speakers and I'm afraid it is going to ruin my tweeters or something else. How did you solve your problem?? I need help if you can please
Poping noise starting up Mcintosh MA 6900
When I turn on the amp using the standby button, I get a popping noise that is audible through the speakers. Not loud, but can be heard. The amp is just 1 week old. I had the MA 6500 in the same set-up and liked it so much I upgraded to the 6900. The 6500 made no noise, none. Is this inherent to the design (autoformers) or is there a problem? If anyone has the same experience or has suggestions, please respond, thanks.