Have you used these amps, or know anyone who has?
I contacted Schiit to quiz them about 0.7Ω impedance capability. They replied that they have not tested that low but that "the Tyr should be quite stable at low impedance".
They don't have a trial period, it's a 15 day money back guarantee so there's a "small restocking fee". So if it's a 5% restocking fee, that would be $160 cost added to the shipping, then double that or triple that if the restocking fee is higher. So it's about $3600 shipped, and about 10% of that to ship back and return, assuming the restocking fee is 5%. That's a pretty big audition cost.
I find this amp intriguing, so, I guess I need to know more.