I am thinking of playing around with some rolling. This amp can run the following type of tubes:
They require 4 per monoblock.
After exchanging a couple of emails with Stephen Monte of Quest for Sound (North American importer for Opera Audio) he replied the following:
"I would suggest the Jj E34L blue tubes you get better bass control , a tad more power and very sweet mids ...superb tubes.. very musical the Philadelphia audio society did a shoot out of 6 different El34's and the jj blues came first in all categories.
I have exchanged pm's with somebody from the AC and he recommended these as well.
After all this you are probably thinking what am I asking/waiting for (and your right). However, I know there are a lot of tube heads here and wanted to get your input on the listed tubes as well.
Also cryo vs. non.....marketing hype or real?