It's very possible... Either that or the recordings you played were recorded in the wrong polarity. Why not e-mail Rogue Audio; I'm sure it's not a secret.
The odd thing is (at least for me) that in my experience tube gear seems to accent polarity differences compared to solid-state gear where the effects seem a bit more subtle.
The odd thing is (at least for me) that in my experience tube gear seems to accent polarity differences compared to solid-state gear where the effects seem a bit more subtle.