i tried several DACs w analogue volume control. All sounded better through my preamp.I guess If you do not have a good preamp, it is a nice way to go. A good preamp improves the sound to my ears, that I have tried.
@fastfreight IME, if you don't like how a DACs analog volume control sounds, it's because you truly don't like the sound of your amp and the preamp is improving its sound.
The analog output of a good DAC lets you hear your amp for what it is.
My RME DAC lets me hear my power amps, for better or worse. My Van Alstine amp sounds glorious. My Hypex amp sounds....meh. It needs a tube pre-amp. ;-)