sound difference MIT ORACLE AC1 vs ELROD vs PURIST

I spoke with David about the EPS-2 Sig on my amp. It's touted as a source PC, but he said it would work great on my Tube amp. And it does. In the same line of Signature series, the EPS-3 is for amps. So far the EPS-2 is doing fine.

I have not heard the other two offerings you mention however I can tell you out of all the other pcs, interconnects and speaker cable brands I've owned up and down the scale over the years, that I am EXTREMELY happy and blown away by what the Elrod latest generation cables bring to my system. They bring a transparency, energy, dynamic and realistic musical experience to my room that I did not think was possible and has been absent from many of the systems I've heard over the years at shows, dealers, etc...(even those costing 200-300K). I have Statement Gold PCs on my amp as well as pre-amp and DAC and they work equally well on all component types. You should definitely give Elrod a try in your system...

thanks,
I will try to use it as input of my Quantum distributor and then switch to Berkeley.
I will test it to replace the quantum cable which I found very attractive in term of lower bass extension.
It is incredible how the power cables can modify and improve the sonic performance of components, expecially with Kharma which is very sensible to any change.
Which main difference (in term of sonic features) between old and new series of Elrod cables?

I went with the EPS-2 Signature because of finances. The newer the better from all the reveiws I've read. Go with what you can afford. If I could afford it I would step up to the Statement series.

I cannot comment on specifics of the EPS2 versus current Statement series as I never owned the EPS2 cables. You may want to do a search on EPS and Statement on the discussion forums and on Virtual Systems and contact people who have owned one or both. The info I pulled back from doing this seemed to me to indicate that the Statement series give increased amounts of energy, refinement, huge sound stage and musicality to the system.