sound difference MIT ORACLE AC1 vs ELROD vs PURIST

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...

I mean that the addition of each Elrod's power cord adds more features, according to a cumulative effect. The fact which a power cable may affect in so higher manner the sonic performance of the components, i think depend by many factors. First, the system chain sensibility from source to speakers. Elrod cable seems adds more texture and body to the sound of my system.

Agreed...I would add energy, realism and other attributions to that description to equal what I am hearing with the Elrod cables....