When they come out with a model that runs on my 50wpc amp, I’m all in after a demo if they sound as good as some people say. I’ve read mixed reviews, so I wouldn’t take the leap without a listen myself. Stax 009S sounds excellent. Susvara sounds excellent. I don’t think you’re going to be upset with the 009S, and I doubt you’ll be missing out on anything earth shattering, unless the idea that you might be missing out on something spoils your enjoyment of a top of the line headphone (Apparently it does for some people in this hobby, lol).