I prefer Audioquest loudspeakercable because they use silver. Silver gives your more information compared to copper. DBS 72v gives you a stunning black level but also a better timing.
In 16 years of time I auditioned many powercables. And I owned many as well. But Purist Audio is in it's own league.
I Always try to look for the best. To be honest my focus is on the best endresults.
I use the Monitor Audio PL-200 with the PLW-15 subwoofer.
The way I use it, it gives a stunning huge 3 dimensional stage. But I created an intimate physical stage with the huge stage. Monitor Audio can make very good crossovers. So you get a wide and deep stage. Their ribbontweeter give a more open and more touchable image than a dometweeter can give. It also has more authority over the highest freq. It even goes beyond 100.000 hz. There is also more decay compared to a dometweeter. The other main advantage is that a ribbontweeter can project a voice or instrument a lot sharper in front of you, it becomes more physical. It even makes the stage larger.
I use Pass Labs poweramps because class A gives you more flavors in the mid freq than ever a class D amp can give you. For classical music this becomes more apparent. The Devialet also gives a deep and wide stage. But Pass Labs give e better speed en dynamics. But also a more musical mid freq. For a perfectionist this is a pre.
I have developed my own way of using Audyssey Pro. I can get a much better controled sound than with any other pre amp regarding price. I even have proven that in articulation and details I can beat every pre amp till 15000 dollar with ease. I even created stealth low freq with a subwoofer. This means that the energy is comming from the place were it is recorded. Even when the subwoofer stands 3 metres from that place. One of my clinets called it voodoo. Because he said; this is not possible, but I hear it.
I can play as loud as I want even with my subwoofer starting from 16 hz. Without professional roomcorrection you will loose all controle, sharp image and even definition and layers of the low freq.