I think it boils down to speakers. The Benchmark DAC sounds perfect on neutral accurate speakers. Lots of really rich harmonic detail far more than other syrupy gear that tends just to sound like warm mush and where masking from all that warmth hides real instrumental harmonics and timbre.
My speakers have been used for three decades to produce a large portion of the music available - sought after for accuracy in conveying the mix or master at all volumes. They match well with Benchmark clean neutral sound.
The opposite of the above would be Marantz paired with say Dynaudio speakers or drivers. These are both dark sounding brands - prized for being warm, smooth and musical.