Got a surprise when someone asked about noise with high sensitivity IEMs on Mjolnir in balanced mode. That it was silent was not the surprise, however. The UERM in balanced on these amps is just incredible. The only issue I ever had with the UERM was lack of sparkle and detail. This is largely addressed with either of these amps in concert with the improved DAC. Compared to the HD800, the sparkle and detail is still not quite right, but compared to how I've heard the UERM before, this is excellent.
With the BHA-1 these are ridiculous. I feel like I can reach out and grab the instruments.
Ultimately in the amp comparison, the BHA-1 wins in capability in a price-no-object fashion. The Mjolnir performs above it's price range, for sure and is thus the winner for the budget minded. $750 vs $1295. Having the BHA-1 to compare it to, I'd say the Mjolnir is worth as much as $1000. It's really really good, and so far the only Schiit amp I would live with.
I will be keeping the BHA-1 and returning the Mjolnir.