Ok I don't own a SSS, but there must be something faulty going on. I'd send the link/clip to TR or talk with the dealer.
Thanks everyone for the ideas! I'm new to posting here as well as Instagram (just signed up to watch the TR live feed they did), but I think I got the link to these videos in here correctly, let me know if it doesnt work.
I just took these with my phone so certainly nothing professional. Second video (swipe right) is positioned closer to the amp and I think better represents the crackling I'm hearing. The static and distortion is not the phone mic clipping, that's coming out of the speakers. Hopefully it translates through the post. Certainly not meant to be representative of any attempt at real playing or the way the amp sounds when it's not pushed, just playing all strings open seems to show off the static and fuzz I'm hearing the best. These are not even with the bypass switched on, just dimed FET, gain, EQ2, bright and mid. Master is barely up, 7 or 8 o clock. Even with the FET backed up to about 2 or 3 o clock it still sounds fizzy. Guitar is a '61 wildwood 10 strat, so nothing crazy in terms of pickup output.
Preamp dimed with Master super low is generally no good idea and can sound unpleasant, but not like this...
@DoctorSpock thanks, I was not aware of this trim pot. I only know FET gain, OD, Bias trim in the classic layouts. I'll have a look for the bypass trim!
@Wyzard - yeah, strange. Maybe it will work better if I find & tweak the above mentioned bypass trim.