Is a high priced Line Conditioner needed

Moved to a new home 3 weeks ago and have just installed an upgraded dedicated circuit. Main panel is Cutler-Hammer CH series with copper bus bar, subpanel is GE Master Load Center with copper bus-bar. The subpanel is tied to the main with massive 6/4 conduit and I'm using 10/2 Romex (for now,...other options too pricey at 16-25 dollars per foot, with 5 outlets I needed about 150 feet of cable) BUT I have installed an Environmental Potentials EP-2050 on the main house panel to protect everything and an EP-2750 Ground Filter on the dedicated circuit. I have heard nothing but good things about the EP units and that combined with the copper busbar panels should be a nice upgrade in the entire system's sound....very excited to hear the result once i finish unpacking! I'll still be using my Purepower 2000 on the system as a whole but may go straight into the wall for my Edge amp and amps in the Legacy Aeris towers. Ultimately I think I'll move to a Running Springs Audio Dmitri but time will tell if this move can happen....

Update...went with a new Bybee Stealth (latest revisions) with a combination of Furutech Gold and Rhodium outlets early last week. I had the good fortune of picking up a fully broken in version that had been with reviewer until the week prior on a prior reserve order. The PP is gone and won't be coming back; I am ecstatic and blown away by what the Stealth is doing for my system, better imaging, even quieter and more black backgrounds, increased precision coupled with naturalness of images, instruments and voices,....this unit is beyond my expectations and is without a doubt the best I've had in my system........

Another balanced power product that I've used with very good results is the Furman IT-Reference20i. The Equitech that Ptss has recommended is a great unit in this regard as well. A word on balanced power; various components will work better or not depending upon how they were designed and if they are tolerant to a balanced power config, i.e. whether they tolerate/can accommodate a situation where instead of 60/0 they see 60/60 on the incoming power line. A case in point was my Esoteric P-03U (Universal Transport); both it and my D-03 DAC (and G-0x master clock) all did very well sonically for the audio side of the setup BUT the video board in general and 1080p video upscaling when using the RGB (component) analog video outs had some pretty wild variations on IRE levels when the unit was running on balanced power. Going out the video board on the HDMI video output saw the IRE Levels less affected however still, they were not in-line with the units performance and videophile-level perfection when not running on balanced power. As my ISF tech and I found out with a Sencor unit and alot of hours diagnosing with Esoteric USA at the time, the video board and upscaling engine (independent and together) did not react well to seeing 60/60 on the power wave so be sure to test whatever components you have both with and without the balanced power conditioner in the loop.

If I read your post above correctly (Sabai), you seem to have an isolation transformer coming from the wall for the entire system, then a passive power conditioner (Triton) plugged into that getting presumably clean power coming into the Triton from the i-transformer, then out of the Triton, you have another power regeneration step (Monarchy) that your transport and DAC are plugged into. My only question is why have both the common isolation transformer out of the wall that powers the whole system and have power regenerator after the Triton? It seems very redundant (to me, I'm not an electrician!) and that the Monarchy is an extra component in the chain that simply regenerates power that should already be clean (of noise, etc..) by the isolation transformer+Triton setup. If I've misread, you have my apologies.....