LittelFuses Series 285 AUDIO/MEDICAL Quality

georgehifi  - your assumption is that all power conditioners add resistance.   But let us assume you are correct.  How much resistance?  
Resistance is always a factor including the cheap power cords used. 

But let us go down the bunny trail and say you have a 15amp RMS supply from the wall outlet.  There as very few power amplifiers manufactured regardless of price or topology that will exceed 5 amps RMS at full volume.  But even if our system has a maximum draw of 10 amps (which is a lot) and your power conditioner adds a hypothetical resistance adding a  1/4 amp draw.    Would you have an issue?  

A bigger issue is fast transient signals that exceed the short term capabilities of your amps power supply.  This voltage drop in milliseconds adds audible distortion, particularly in a premium system.  The combination of a high-quality power conditioner and high-quality power cords noise is to suppress noise.

A bigger issue is fast transient signals that exceed the short term capabilities of your amps power supply. This voltage drop in milliseconds adds audible distortion, particularly in a premium system. The combination of a high-quality power conditioner and high-quality power cords noise is to suppress noise.

Nonsense. The line frequency is TOTALLY UNRELATED to program demand. The power supply diodes conduct ONLY at the PEAK of the AC line waveform. The capacitor bank supplies the DC. If the capacitor bank voltage drops below output demand, distortion occurs in the output stage. Input stages have typically have secondary regulators and run at lower voltages than output stages.

A power conditioner may remove some HF noise from the line if there is any. Regardless of noise, it will add impedance to the power transformer / AC line interface. For lower power devices like sources and control units, no biggy. For high current devices, the effect varies with the line and transformer impedances AND THE DEMAND. Take home a few power conditioners and a few amps. The number of combinations is PwrCon X Amps. Some improve, some don’t, some have no effect. Move to another location and the game starts anew.

DO THE MATH!!!

your assumption is that all power conditioners add resistance.

Like I said, "over your head" typical fuser's retort 

 Anything will, nothing won’t, stop being such a fuser for a while, and see the forest for the trees.

I love it. 
We have a "do the math" and an " over my head"  guy.   Look if your happy with what you have great.  Let others who have the experience with power conditioners provide content.

Let others who have the experience with power conditioners provide content.

I said power conditioners are good for source equipment sunshine.
But like I said an amp to sound it's best especially in the bass it's power supply has to be as stiff as it can be. By adding any sort of power conditioner between it and the wall outlet introduces some series resistance and reduces that stiffness further. Remember forest and trees.