Sub-out will drop the performance level quite a bit due to having to use a DSP or some other way to get a crossover in there. I have no doubt that can be done well enough, MiniDSP already does it, but its not as simple as just slapping a crossover network in there. If you want a subout just buy a MiniDSP SHD or something.It measures great, but as with som many new DACs... it's more of the same. To me, if something has a volume control it should act as a preamp, but in 2023 it should have at the very least a configurable sub out, no?