Nothing Schiit makes can be considered pretty. They’re inoffensive at best. Not really a great example to drop as your standard of aesthetic, unless you’re saying you like a minimal & simple visual footprint. Any others you like?
And when you mention the "solid state" sound of ARC preamps are you speaking from experience or regurgitating other opinions? From the Ref 6 I would say they truly sound like a hybrid, well done - not the classic tube sound, but not full-bore solid state either.
I think my VAC Master preamp is quite beautiful in person, if perhaps a bit ostentatious with the glossy glossy gold flake clearcoat, big bright logo, and huge faceted chrome knobs.