If you are into flashy shiny sound… they fit the bill.
Wait, what? Luxman? Shiny? Flashy?
That is the exact opposite of what I've heard from the several Luxman units, including the integrated I currently own, which has lovely smooth, liquid midrange and treble that is practically tube like without sounding at all splashy or adding exaggerated air or bite, in addition to excellent extension in the bass and treble.
I think you are confusing their looks with the sound.
Having said all that, I've never heard a Luxman DAC but am quite willing to take one on for a long term review! :D
Best,
E