Are you referring to the Benchmark DAC3 HGC? One volume control and lots of imputs/outputs. Eliminate your preamp. I think solves all your problems. Have one and love it.
Control volume with DAC or Preamp?
My DAC (PS Audio Directstream) has a volume control and so does my preamp(Benchmark), of course. What’s the best way to control the volume of my system to get optimum sound...turn the dac to maximum volume and use the preamp to make adjustments , turn the preamp to maximum and use the DAC for adjustments, turn each of them up part way? Or does it not make a difference?