And this is popular too! The XPS DR upgrades the power supply for the CDX2 or NDX to dramatic effect. It is also an excellent upgrade for the DAC, the NAC-N272 or can be used to power the NDS streamer to a very respectable level of performance.
The improvements are in all the predictable departments (cut and paste ‘resolution, refinement, image scale, dynamics, timing, sheer musicality’ for the umpteenth time!). The surprise is the amount of change.
In reality, this is many separate power supplies in one box. The ‘burndy’ cable that links it to the CD player is something to behold.