Let the burn-in commence!
Happy to have received my Massdrop x THX AAA 789 amp today (originally scheduled for Feb 2019). The first thing I noticed is in Gain setting I (lowest) I have to turn the dial to 2-3pm to hit the sweet spot on the Focal Elegia -- which are very easy to drive. On Gain setting II (medium) I only need to hit about 11am to hit that same level of output. Have not tested gain setting III (highest) as I've seen in reviews and charts which doubles the THD (although still incredibly low). In comparison with exact same setup but with Feliks-Audio Echo (only has one gain mode) the Elegia hits their sweet spot at around 8-9am.
Can't make any comments yet to its fidelity or sonic performance as I haven't had yet the chance to do quiet and critical listening. But I have it going with some music in the background for burn-in purposes.