Since Rx8man owns one of the DACs we manufacturer, he has had the opportunity to understand what makes a DAC sound the way it does. The separate power supply is around 25 pounds. The R2R DAC is surrounded by higher quality parts then are in the high priced DACs in the video. Price has nothing to do with sound. If you really want to hear what a reference DAC can offer, just contact me or come to our Listening Room in Northern New Jersey. Bring your DAC over for a comparison.
Happy Listening.