Guido, I believe the Joule is single ended only. I am leaning toward Rowland because it does not look like Joule offers HT bypass, which I need. I like the fact that I can leave it on 24 x7. I am not sure if you can do that with a tube Pre. I don't want to wait for a pre to warm up.
Rowland Criterion vs Joule-Electra LA 300ME
I have an all MBL system (101E's and 9008 amps) and am looking for opinions on which of these great pres might work the most magic in my system. I know the Criterion is not out yet,but with it being battery powered, you have to assumme it will be exceptional. Same goes for the Joule-Electra.