sound difference MIT ORACLE AC1 vs ELROD vs PURIST

Its not boxing its YOUR system and what you like.

Just another one to consider, I was planning and ready to go with the latest Elrods. But I heard NVS Sound, and stubmled upon something really special.

That said, I think both the NVS and Elrod Gold had the largest and most profound effect on the sound out of the multiple power cables I tried. They were very different, but they were both immediately obvious.

I still use a handful of the older Elrod Statement cables, and these remain a great PC and a good value to boot.

I had few time to test the cable but the first impressions have been confirmed. Sound scene is more open and detailed. High frequencies are "real", not harsh.
The sound image as a whole seems to be more deeper, larger and palpable.
Many users in this forum say that the addition of Elrod PC cables have a cumulative effect. Do you confirm?

I don't know whether "cumulative" is the best word, nevertheless I agree. I had started with a single Elrod Statement, and finally ended with 4 Statements in my old system, this worked very well.
To optimize the power system is a very complicated task indeed. For details, you may read http://schnerzinger.com/molecularprocessing.php - topic power feed - very interesting reading.
In short - sharing the same design principles for all your power cables and your power strip can be advantageous to manage the outer and inner interfering fields. This may be an explanation for a "cumulative" effect.
So having an all Elrod system can be a step in the right direction.
I now have a complete Schnerzinger power distribution system, with perfectly fulfills the concept of an integrated power system, sharing the same (and very sophisticated) design principles throughout the system - from the wall outlet to all devices.

As with Uli's comments, I'm not cumulative is the best word but I agree wholeheartedly with the point...