I run FLAC digital music files via USB1 (24 bit) to an EDIROL (M-100FX) mixer. From the mixer, which outputs only digital (Optical or Coaxial), the digital signal runs to an older model Marantz (SR780) receiver. The mixer exists because of the need to also process audio from another computer which is a video editor. The mixer also serves as a voice recorder to the video editor. Both computers share the Marantz for audio monitoring.
Here is the question: The Marantz is obviously playing the role of a DAC, but is there a more elegant DAC solution that could be inserted between the mixer and the Marantz? I am only concerned with optimizing the FLAC files for music playback.