Thanks for the comparison. I've been looking at speaker amps for susvara / higher end tube amps but oor seems like a great buy around 3k. I like the stage and imaging of the Volot, I agree that's it's stand out feature. I find the bass and slam to be enough but for susvara a little more wouldn't hurt, in my experience the Volot benefits from an hour warm up at least before it starts sounding it's best. I think the 1266 might pair better with Volot than Susvara but it also depends on the music you like.Volot has a huge soundstage but not much bass with the Susvara. Oor, with the correct voltage set in hypsos, offers great bass and a holographic soundstage but it has a more intimate presentation. It was tough giving up on the soundstage of the Volot but I was missing the fun in music without the bass. I thinks it’s a good upgrade, if you are willing to part with that soundstage. And I think the Volot is also a little brighter compared with the oor.
I have the Formula S and Powerman which has stronger bass than Volot so might give that more of a try with Susvara to see if that helps with the low end. Other amps I'm looking into are WA23, WA33, Mogwai SE, Keces S300 + Preamp, and AHB2