@viethluu ,just a thought. if you do not mind... You wrote ’But, I am looking for some DAC that can get close to the Bartok’ characteristic.’
I believe that it will be very hard to find some dac in that price range that you have mentioned (3-5tusd) that will give you what you seek (if Bartok is your reference) so, I wonder, why dont you try some DCS of previous generation, like Puccini or perhaps Debussy?
They are, indeed, still very capable players and despite the ’hype’ that every new stuff is marketed, I do not believe that new dacs in 3-5tusd range can ’beat’ them
I had Puccini with the clock and have heard some new dacs (ps audio, ayre and some others) in even higher price range from one that you are looking for and Imho they were not in the same league (personally I prefer cd players still and have Burmester 089, which has some traits that I like better than Dcs, but on the other hand, some things Dcs Puccini does better) You may find next link informative and there is also a part where Dcs people share their opinion about r2r dacs