@bekeske Jim's response makes sense and compares well with my contact. He of course recommended checking with Jim to be sure. His thoughts were it should be okay. The tubes would likely run a bit hotter and thus might cut tube life a little shorter but this would likely depend on the tube design itself (some are more sensitive to running hotter than others). Ran my system a good amount this weekend since it was rainy outside and the Trumpet is really starting to shine. I think it's pulled up along side my other setup that I'm very fond of. It may even be better in detail, settling on the right amount of warmth. The depth/width of soundstage is what I've been waiting for which is where my IA Tele combo really excelled. Sound stage on that combo is very good. Once I get some a little more time on the Trumpet, I'll A/B them. Currently, I'm not running dampers on the tubes. I think I like them off for now. These tubes seem fairly low in microphony for now at least. I suppose that could change and I'm told a little pinch of microphony is not necessarily a bad thing.