Hi FRM and Arthur,
Thanks for the warm welcome.
Lii F-15 and its cousin Crystal 10 is very temping with me.
But after seek advice from a veteran AC member, I see their requirement is not meet with me( must be floorstanding for bass,3 feet away from rearwall) and lii also have no bookshelf closure to use with them.
Given my situations (near -field listening at late night, small volume, desk at the corner of the a weird shape livingroom) I'm seeking solutions from from Omega family f=, though have'not know if there's any alternative solutions , shipping cost from USA to vietnam is crazy. May be wait the new Crystal 6,
My current rig: PC> SingxerF1> Chord DAVE(2W@8ohm)> Sony OEM fullrange or HE500.