Can only speak to the Benchmark 3 HGC. Without my preamp the the sound was lifeless and sterile. Overall the attributes I look for that get me closer to my perception of what the music should sound like where muted without my pre, of course YMMV.
DACs that do well without a preamp
I am looking for a DAC to feed my DNA-1 gold power amp directly, streaming Qobuz or Tidal from a Bluesound Vault. Budget is $1-2K; would consider used, if worthwhile. Current contenders are Benchmark 3 HGC, Brooklyn DAC+, Gustard x26 pro, Holo Spring 3, Musetec 004 and Pontus ii. Looking for clean, detailed, uncolored sound that "lifts the veil". What are the qualities I should look for to drive an amp well, without a pre?