I have both Sonys, a DVP-7000 and a DVP-7700. I use the DVP-7000 in my home theater system and the DVP-7700 with a Monarchy 22-A DAC in my music system. The DVP-7700 on its own is a great sounding cd player but the Monarchy DAC adds a little more detail. Most people will never hear the difference it just depends on your system and what you are listing for. Mike
