Greetings, all.
I have now had the Double Impacts for a couple of weeks and have between 50-60 hours on them. Speaking of Line Magnetic amps, I am driving my DIs with the 508ia integrated and can report without reservations that it is a spectacular match. At 48 watts, this thing is a powerhouse, which can really come in handy on some kinds of music or for some listening tastes, but it lacks nothing in finesse and musicality played at lower volumes. Just phenomenal with all kinds of music, which is also how I would describe the Double Impacts!
I have not yet put back in my Daedalus speakers for a direct comparison, though I have used them for so long that I do have some impressions of some key differences between the speakers (as well as some similarities) that only need to be confirmed by putting them back in. Should make for an interesting weekend.

