Do i need AC conditioner w/dedicated AC lines?

Gosh, I think you'll get some varying responses on this, and it may really depend if you can perceive any significant difference when you listen yourself, but my feeling is that you might not. If anything, a source component might benefit, but the monoblocks will probably be better off run straight into the wall.

Dirty AC comes primarily from the pole, not the house.

Dedicated lines help isolate the stereo from appliances, dimmers, and other noise-inducing household items.

Supposedly dedicated lines do not help with isolating the bi-directional digital noise of a cdp as it will work it's way back to the service panel and into other dedicated lines.

But there is still much noise coming from the pole that needs conditioning. So the answer is yes.

-IMO

My 2 cents worth
At my old house I had my amp plugged into wall with dedicated line and i had my pre/source plugged into line conditioner also on dedicated line and if i plugged the amp into line conditioner there was minimal differences but noticeable.Now at our new house same dedicated lines i had this "glare" issue with my setup,the bass was hollow sounding,the highs were hard etc.I plug the amp into the line conditioner and probably 70% of my problem fixed,tried a shunyata hydra and 100% of my problem fixed and further improvements.So I guess its a matter of the quality of power you are getting from the pole and trying a line conditioner I think would be the only way to tell if you need one or not.