Larryrx7,
I had the same problem with my SM-70 Pros, but hated the idea of hanging a cheap crappy cheater plug off the end of my nice power cables. It's a pretty easy mod to take the top off the amps and disconnect the ground wire internally, so that's what I did. Alternatively, there are power cords with removable ground terminals, or you could even snip them off if your cords aren't expensive. Cheater plugs are great for diagnosing ground issues, but I would never leave them in the circuit for serious listening. Why add another potential choke point?
David
I had the same problem with my SM-70 Pros, but hated the idea of hanging a cheap crappy cheater plug off the end of my nice power cables. It's a pretty easy mod to take the top off the amps and disconnect the ground wire internally, so that's what I did. Alternatively, there are power cords with removable ground terminals, or you could even snip them off if your cords aren't expensive. Cheater plugs are great for diagnosing ground issues, but I would never leave them in the circuit for serious listening. Why add another potential choke point?
David