Which DACs bypass digital filtering?

[LesterNZ]

As a newbie here, and a happy home listener thru a Metrum Amethyst R2R DAC, I may be slightly off-topic: But mentioning double bass, kick-drum and other LF instruments to determine any DAC's musical resolving power comes with all the complications of room acoustics and likely speaker box colourations. Headphones, planar and open baffle design speakers may possibly by-pass these resolution  "obstacles". Though we know few recordings are actually made for playing over these transducer types,  

 

So this single individual with Spatial M3-T open baffle, controlled directivity drivers urges fellow music loving audiophiles to not get too crazy over miniscule numbers, but to SERIOUSLY get your listening room properly working with all this DAC perfection.