I agree with your opinion that digital system is sensitive to power cable and supply.
Sean Jacobs DC4 also got favorable review, but I opeted for Farad and happy with improvement at modest cost.
Thomas
Chord Dave and lInear power supply
I had been using Chord Dave and Mscaler for 3 years.
I installed linear power supply by Farad which cost me around 3k Euros including three separate power supplies.
Wow it is worth every penny.
I get more clear separation of each instrument with more tuneful bass.
Also slight sibilance is gone.
It is Dave +. after modification.
If you own Dave, you had better try it.
The installation is rather handy.
You need to follow instruction.
Thomas