I've always been pretty sensitive to highs (it sucks). Just got a Topping D70 and really like it but it's hard to listen to for long at decent volume. Any recommendations under $800?
OP, It might be wise to "borrow" or test a couple of different speakers to see if you respond differently to another option besides the Vifa Radiator Ring tweeter in those Onix. Perhaps a silk dome or ribbon implemented like the Golden Ear? A free test is never a bad idea.
I have a Nuprime Dac10 and its stunningly good. I still suspect the highly directional radiator ring tweeter might be giving you too much of a spotlight effect and choosing something with more dispersion may do the trick. It never hurts to test and try.
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