Power Conditioning - How Important for Digital and Analog Source Components vs Amp?

@nyev 
I see what you mean by all dirtiness being equal: in your particular situation; it’s hard to know. If it is fairly clean, you won’t need much to get you over the humps. At any rate the AQ 1200 is as good a place to start as any. The reviews are generally favorable on it. If it has enough outlets for your needs, give it a try. It’s not  outrageously priced. As far as power cords, if you have a favorite, the way to go is to try it on all like components (sources or amps).  The characteristics that you favor will only be emphasized more. While there is nothing wrong with using different brands of cables, a lot of people stick with one brand for every thing.  As @steakster said there is no magic bullet, you are on the right path. Enjoy the process also. 

Thanks for the advice all.  Just did a first quick comparison with and without the AQ 1200 for my InnuOS streamer, and I definitely heard an improvement with the conditioning, albeit a small one.  It was the same effect all across the frequency range, with better clarity and definition.

I have will have a superior power cord going into my Diablo, than I do going into the conditioner.  Debating whether to go through the hassle of testing how much difference an upgraded power cord will make for the AQ 1200! 

Trying a conditioner is important. Most of the time it makes an improvement, occasionally it doesn’t. 
 

My most recent upgrade in power (over the last year).

Biggest effect first:

1) Amplifier Power cord (I spent many months on this… to get it right)

2) Direct line (10 gauge direct to,amp)

3) Power Conditioner to all non-amplifier components

4) Diect line to non-amplifier components

5) Finally power cords to all non-amplifier components

1 - 4 we’re all really… really important… not sure the order is correct at all. 

I completely agree with your list ghdprentice and yes power cord to amp makes SO much difference. Can make or break a system.

what is still a mystery to me is how important the cord going TO the conditioner is. Is this a place that you can skimp out a LITTLE? Because, I would think that the cords taking the conditioned power to the source components would be much more important than the cord going to the conditioner?

For what it's worth I've been told by friends (whom I consider true audiophiles with great listening skills) to use a very good power cord on the conditioner for the best results. They claim that's where they heard the greatest difference. Over the years of tuning various high-end systems, I've learned is there is no one answer that works for everyone. Trial and error and trust your ears.