When do you need a power conditioner


I have HT set up with about 11 components. I currently have a Monster stage 2 clean, which is carried over from my previous set up. The difference is I have separates now, is that enough?
kalbi23
Question, getting a dedicated line is out for me. I have a great deal on a Furman Elite 20 pfi, now this unit comes with a 15 and 20 amp power cord, since my outlet will be a standard 15, will this work, or should I just be looking for a 15 amp line conditioner?
Dedicated line (or 2) 1st. Then consider power conditioning especially if you live on the grid.