Glad to see this amp getting some attention again! I’ve had the Super-Hi since Oct 2018 and am still very pleased with it.
Thanks for the comments on the posted video
(I am the guy on the left). As Bram576 said, for Death Atlas we blended the Super-Hi and a 6505. For our new record we again used the Super-Hi but this time went with a 6534 mixed in. In my opinion the overall guitar tones are more aggressive this time around. To be sure, there are other elements (bass tone and mixing choices) in play to bolster that impression, but to me everything just sounds angrier.