So I have a Purifi EVAL based unit which has XLR only input and utilizing a Speakon to banana adapter output. I have a single ended streamer/DAC source. I have a SE to XLR adapter cable and a Schiit Magnius line level headphone amp with preamp function that accepts SE input and converts to balanced and outputs a balanced XLR output. There is a very discernible difference when I choose to interpose the Magnius. Why should this be? The SE to XLR is a Stage Right Monoprice. Is the Magnius doing something to supplement/subsidize the Hypex buffer section on the EVAL unit?