In the beginning (I have owned the unit for 1½ years now), I had some issues, with the unit making weird noises, when not playing audio and set to an analog input. But havent experienced that for over a year.
Popping, I'm not sure what is meant. I sometimes have a _small_ pop (from the main speakers) when changing numbers, but nothing that is disturbing to me.
They are low volume, and only happen seldomly.
I have my sub integrated, and have never had any issues. I have heard about people having issues with weird sounds from the sub outputs though, so perhaps I'm just lucky with my setup.
But the integration between the sub and my main speakers is very good, I think.
Only problem I ever have is that the unit can become unresponsive, and require a power off / on on the switch on the backside. But I have had this happen perhaps 4 times in the 1½ years I have used it, so not a major issue. Nothing I cant live with anyway.
Now I don't wanna tell you that there arent any faults, because I'm sure there are. I just don't experience any of them in my day to day use.
@Dj7675
I use my TV through SPDIF (optical) with no issues I'm aware off. Sometimes it takes ½ -1 second between channel changes before sound plays, but I have not had any popping sounds. It simply works for me.