Indeed it looks like a couple of USB hubs.What on earth are these things?:
View attachment 367871
View attachment 367872
They look like USB hubs, but I suspect they are something more esoteric.
Looking at the system, I reckon the owner has spent more on tweaks and cables than I did on my whole set-up. Although, less on acoustic panels.
Ps. Just a thought, maybe it's blowing air on the record to keep it dust free?