Help selecting a power cord.


All my gear has the factory supplied power cords  I’m ready to try 1 aftermarket power cable as a test.  So what brand power cable should it be and what device gets it first?  Tube pre?  Tube main?  D/A?  CD transport?  Roon Nucleus?  Subs?  GE Trefs?? Turntable? Oppo 103?   Which piece of my gear should be most affected by the improved power cord??  I look forward to the responses and will likely choose the cord that has the most recommendations.
128x128fastninja12
I did the following test.

1. Installed an isolation transformer (Plitron). The electrical inspector said that it was the cleanest power he had ever seen outside a generating station.
2. Change in sound was obvious: crisper, clearer, cleaner.
3. Borrowed two expensive power cords. Each made a slight improvement over factory cords when using wall power; but neither was as good as factory cord plus isolation transformer.
4. When plugged into the isolation transformer, the expensive cords made no improvement over the factory cords.
5. Conclusion: save up for an isolation transformer, IF you can locate it outside the listening room. That is important because they tend to growl when doing their job, which is cleaning up the power and protecting your equipment from DC.

YMMV

Good luck!
AQ Storm series power cords. Buy the best you can afford and start with the amp or DAC. But it should improve every component.
-Alex
I make my own using quality parts sourced from known and well-established manufacturers (e.g. Furutech).  That way, I can source the materials, wire and if desired, covering material, cut to spec, assemble and deploy at a fraction of the cost of buying similar cables on the market.  

Likewise, without appropriate power filtering and conditioning at the main, cables can only contain so much electronics to reduce noise and other negative elements before they become unwieldy to acquire and/or implement.
I just bought 3 power cords from Patrick Cullen, They are execllent quality and are very reasonably priced. He was helpful in picking different cords for different components.  He custom makes them to order, starting at 3 feet.  It will take a few weeks to get them as he was running about two weeks worth of orders ahead of mine.  Give him a call - he is very helpful.  I found about about him from an add he placed on Audiogon.
I just bought 3 power cords from Patrick Cullen, They are execllent quality and are very reasonably priced. He was helpful in picking different cords for different components. He custom makes them to order, starting at 3 feet. It will take a few weeks to get them as he was running about two weeks worth of orders ahead of mine. Give him a call - he is very helpful. I found about about him from an add he placed on Audiogon.