So I didn't test many speakers with NHB-458.
As my thought, DarTZeel's co-worker Evolution Acoustics speakers are perfect.
I'll import EA speakers, but Korean audiophiles don't like the masterpirces designs.
So I gave up importing EA.
DarTZeel amps has all super fast response, GREAT texture, and beautiful sound.
NHB-458 can make almost speakers much more beautiful sounds I think.
The problem is DarTZeel has no Korean distributor. Ha Ha