Grounding

Czarivey
"cold water pipe in the place i live is plastic and so
sewage. one way is to drop ground inside sewage such as drop
it in toilet tub, but be careful not to do ya thing when
there's thunder or you can loose ya things...
sewage and waste is much better conductor vs. water."

What? PLEASE nobody do any of this! Not sure if this is
for real, but don't do it...

What Ralph and Al said is correct.

The ground terminal on the back of the Denon DRA395 is for a turntable, not a chassis ground. You shouldn't need to ground the unit itself?

"If I have this right then, it is not necessary to ground my 395."

That is correct.