After auditioning Orchard Audio Starkrimson Ultra for 8 days, I had been listening to Line Magnetic 508 and Rogue Cronus Magnum II fitted with vintage tubes.
8 days is too short to reach clear conclusionl without doing cable rolling or comparsion with other refutable class D amp like Atmashphere or Audion.
But Starkrimson clearly has no serious fault at all.
It sounds very transparent with lot of details.
Soundstage is wide and deep enough ( not the best but close to it).
Starkrimson works nice with both Lansche 4.1 and Vaugn Cabernett II.
Thus it is a nice value for sure.
I recommend you try it by being in the line for tour.
https://forums.stevehoffman.tv/threads/orchard-audio-starkrimson-stereo-ultra-amp-tour.1148415/
Thomas