To power condition or not to power condition AVR

I've heard the PS AUDIO Dectet Power Center is a great bang for the buck but every conditioner I've tried killed the dynamics.

The Arcam looks like a decent unit.
http://www.soundandvision.com/content/arcam-avr400-av-receiver#oT8I4Md9o6eCKlAx.97
 
Every power conditioner that I've tried restricted the dynamics or soundstage of an amp, (But I have never tried a high-end, high-priced regenerator).

Arcam does not list the specs for current, only nominal power (presumably into 8 ohms)...

Output power 130W p/c (2 channels driven)

Output power 90W p/c (7 channels driven)

I would think that you would want unrestricted power on demand, and that would come from your 20A dedicated line. If you have steady line voltage into your house with no "brown outs" in your area, plugging into the wall receptacle may provide the best performance.
I would be more concerned with good surge protection from a non-current limiting power strip, i.e., Furman offers a power strip with EMI/RFI noise filtering.

Unless you have wild power swings because you live in an old apartment or the like, where a power conditioner assists in flattening out the swings with an element of surge protection, there is no reason to introduce a power conditioner.

as properly highlighted in the prior posts, they are just detracting and limiting filters that detract from audio performance. 

As AVRs already suffer from lousy cheap power supplies, the filtering effects are magnified to the negative, not the positive.

I agree with AKG. I’d move up to higher quality separates before spending a lot of money on power conditioning, especially since you already have a dedicated line. But if you have fluctuating power coming into the house I’d consider something with power regulation to help protect electronics, especially since Arcam products already have their fair share of reliability issues. I use an APC H15 and it shows me when it’s boosting and cutting power due to the fluctuations we have here, and it also eases stress on components with a sudden loss of power that also happens here frequently. I will say it gives nice peace of mind knowing it’s working. I have a fairly mid-fi 2.1 HT setup I cobbled together, but my neighbor uses the same conditioner in his Bryston/Martin Logan setup and hasn’t noticed any ill effects from using his APC. Hope this helps and best of luck.

I have used a PSaudio P10 with my AVR and it worked well