My take (sorry if I repeat something already said, didn't read the whole thread):
* The ARB-51 is likely to have a lot more headroom than the KEF, important if you don't listen in nearfield without a subwoofer.
* I've seen a lot of reports about connection issues and bad application concerning KEF's firmware, I wouldn't choose a "lifestyle streamer + speaker solution", personally.
* KEF has a (very good) quasi-spin in its white paper while Elac has nothing, and most of the models tested here (AS-61, Uni-Fi 2.0 and BS U5 Slim) had at least one major problem.
* Why are you focused only on these models? KEF's R3 or other active designs like Neumann, Genelec, Kali are way safer choices, as far as measured performance goes.
* The ARB-51 is likely to have a lot more headroom than the KEF, important if you don't listen in nearfield without a subwoofer.
* I've seen a lot of reports about connection issues and bad application concerning KEF's firmware, I wouldn't choose a "lifestyle streamer + speaker solution", personally.
* KEF has a (very good) quasi-spin in its white paper while Elac has nothing, and most of the models tested here (AS-61, Uni-Fi 2.0 and BS U5 Slim) had at least one major problem.
* Why are you focused only on these models? KEF's R3 or other active designs like Neumann, Genelec, Kali are way safer choices, as far as measured performance goes.