Make the point to this guy that any sonic value he has in his tube integrated will be lost running it through volume controls. Better that he use the pre out on this unit to drive a separate amp to run the DA, and have a pair of dedicated speakers in the room with the amp for fine listening. This comes from someone who owns a couple of C-20's, a couple of MC-240's, an MC-30, MR-71, Marantz tube, etc, etc.