Definately the preamp. I have a Duet going to a DAC, going to a preamp. Both my preamp and DAC have significantly better volume attenuation/control than the one in the DAC (either via digital out or analog out). For convenience (background music), do whatever is more convenient.
Volume Control thru Duet remote or Preamp remote?
I have a Logitech Duet connected to a DAC to a preamp. Should I turn up the volume on the Duet to maximum and control the volume through the preamp remote or just control the volume through the Duet remote. I am asking because I have heard some people say that if you use the Duet remote you drop bits. That argument doesnt make sense to me.