What should I expect after installing a new power management system?

After installing a new power management system, you should expect a smaller balance in your bank account.  

Improvement in performance, if any, will most likely be based on the psychological need to justify they expense.  

I've used many power conditioners but have had the best success with Plixir.

Plixir doesn't limit current and is balanced. Use for your DAC, Streamer, Pre etc.

Plug your power amp straight into the wall.

The use of an AudioQuest Niagara power conditioner has definitely improved the sound quality of my system. Together with a good power cable you can significantly lower the noise floor and help to diminish the RFI and EMI that can really limit the clarity and the depth and breath of how your music sounds. 

Hello, emergingsoul

If you can get a "Niagra quality" power management center and appropriate power cables installed in your system for evaluation, I would do so.

I would suggest, however, that you either a) wear some Depends, or b) have an extra change of underwear close by.  I do not want to be responsible for what happens when everything in your system with a power cord sounds remarkably better -- all at the same time.

Or, you may hear no difference at all.  But, I'm leaning more towards jaw dropping.

The inductor in a circuit will change the phase of the current to lag the voltage. A big ass coil will have resistance bug great for power if it’s sized correctly. At a frequency depending on the value of the inductor operates at and several key thing wire size, DCR. If you want it to remove a high frequencies if a small inductor is required , the power loss will be out of the frequency that the amp does care for. Best to use a huge ferrite beads i the signal path. Wether current to voltage phase makes a difference in sound I don’t know. However Nelson Pass has proved that it affected the sound stage by moving it forwards are back. 

Whe music is recorded, the signal goes though mixing boards, mic, recording systems then made into the media you like. Who know the phase then.

New ideas and regarding wave theories regarding electrons could explain why cables function they way they do.

cheers