Why do I need power management if I have a great power cord?

How much did the fuses cost?
Are ythe subs working with the new fuses installed?

To Holmz: Thank you for the clarification regarding ‘what he did there.’ I lost sight of the fact that the amp’s input signal is used to modulate the power supply being output to the speakers via tube or transistor.

After digesting the Audio Science Review vs. PS Audio ‘debate,’ I’m no longer considering the purchase of a power conditioner for the purpose of cleaning up my sound, but I am going to look into a decent, audio-grade power strip to protect my equipment, as recommended by Amir at ASR and by a link posted earlier in this thread.

To the original poster: My take-away from the discussion thus far is that you don’t need a power conditioner, but you do need to be confident that your equipment is getting the power it needs. A dedicated line from the fuse box would be best, but short of that, try to keep computers, WI-FI routers, dish-washers, air conditioners, washing machines and the like off line if they are on the same circuit. (Hopefully, they aren’t.) You probably need to invest in a ‘better’ quality surge protector. The jury is out for me regarding the use of isolating transformers, unless you are experiencing issues with ground hums (and I hope you’re not).

I’m not convinced of the need for 240 volt service, personally, but I might consider it as an alternative to pulling 10 AWG solid conductor wire. I would think that 12 AWG would be plenty at that voltage. 

For me, I have tried different interconnects, speaker cables, power cords, power conditioners. Each has sounded different, for better or worse. So anyone who doesn't hear any change either has a low fidelity system, or insensitive ears. 

But late last year, I purchased a stand alone surge protector from Zero Surge, a company that makes OEM for other manufacturers. I discovered that running my integrated amp through it reduced the dynamics. I called ZS and spoke to a guy named Jim (if I got the name correctly). I told him what I heard, including that I had done an A/B/A listening test. 

He told me he has a degree in physics and that what I heard was impossible. "It's just wire", he said.  I told him that there was no mistake in the difference between plugging into the ZS and plugging into the wall. I responded that if what he knew didn't explain the sound difference, then there's something he is not aware of in the product's design.

For me, I have tried different interconnects, speaker cables, power cords, power conditioners. Each has sounded different, for better or worse. So anyone who doesn’t hear any change either has a low fidelity system, or insensitive ears.

We can have opinions about interconnects and speaker cables.
However…
It is exactly opposite wth power cords and power conditioners.

The higher fidelity systems usually have the better power supplies in them and are more immune to what power is coming in. That is part of what makes them higher fidelity, but it also is a sign that they are not cutting corners in one area, and likely also not cutting corners in others.

I would believe that on some lesser quality systems, that these snake oil things might work, but they should work less (If even at all) on systems that are designed right.

We can paint the Camry red, but it only identifies as a Ferrari, it doesn’t actually become one… much the same as a fancy cord does not fix an inadequate power supply design.

You are right about power cords and power conditioners, and i concur with your metaphor about painting red a Camry to pass it for a Ferrari... 😁😊

But when these common sense and common place facts are said and well said by you, there is other alleged "snake oil"devices which cannot be put under the rug and be treated as useless because the owner of the costly price tag of some higher end audio system decide that it is the case...

These are the electrical various possible control over the part of the gear and of the room/house electrical grid but also the mechanical vibrations/resonance controls but also the more important acoustical passive treatment and especially the mechanical acoustical control devices...

These are not ALL snake oil creations ...

This is where a low cost system can exceed in S.Q. or rival not far behind it some costlier one, it is here where your Ferrari metaphor ALONE did not work anymore...

Audio experience does not result DIRECTLY from the gear system coming from the store heaven but audio experience result also from the gear system IN A SPECIFIC acoustically controlled or not controlled room...

That is the limit of this popular Ferrari metaphor....It takes a DESIGNED RACE TRACK for the Ferrari to perform , put a Ferrari in a sahara desert caravan track it will not work well...In my metaphor the acoustic control of the room is the DESIGNED track and specifically for it, where the Ferrari perform... Any system without acoustic control is like a car in the deep sand track of the desert ...It did not work well....

Then all acoustic devices are not snake oil or secondary artefact we add or not to a system, they are fundamental like the designed track for the Ferrari...

In my set of acoustic controls devices i use classical Helmoltz method and devices yes , but also unorthodox devices to help my low cost system to not be so far away from SOME highly costlier one... None of them are snake oil...

Yes my system is NOT high-end at all , but yes my ratio quality/price is very high and my experience is not so far AWAY behind system costing 100 more when these system are put in an uncontrolled  room in particular... Thanks to Helmholtz among others...

Acoustic is the key not the price tag....

And all added devices around a system are not ALL snake oil....

Exemple out of acoustic field : tuned mechanical vibration control devices....They are ESSENTIAL....

For me, I have tried different interconnects, speaker cables, power cords, power conditioners. Each has sounded different, for better or worse. So anyone who doesn’t hear any change either has a low fidelity system, or insensitive ears.

We can have opinions about interconnects and speaker cables.
However…
It is exactly opposite wth power cords and power conditioners.

The higher fidelity systems usually have the better power supplies in them and are more immune to what power is coming in. That is part of what makes them higher fidelity, but it also is a sign that they are not cutting corners in one area, and likely also not cutting corners in others.

I would believe that on some lesser quality systems, that these snake oil things might work, but they should work less (If even at all) on systems that are designed right.

We can paint the Camry red, but it only identifies as a Ferrari, it doesn’t actually become one… much the same as a fancy cord does not fix an inadequate power supply design.