yes,
i do like the tone of 650 and Aeon Flow,
better speed, clarity and detail would be a plus for 650
wywires is expensive compared to periapt
do u run your 660S balanced?
i shortlisted CMA400i since it's balanced and has a dac as well (v curious if mojo's dac is better than the one in CMA400i)
No i run 660S single ended straight from Mojo, no amp needed, plenty of power and the same goes for HD800S and Hugo2.
I owned the 650 running balanced out of CMATwelve, it did not come close to 660S and Mojo.