Best Powerchord for DIGITAL sources? what are you.

Magnan super bronze or Magnan new ac. It is like another Ayre MP FILTER upgrade for comparison.MAGNAN SIGNATURE POWER CABLE & POWER CONDITIONER
Our research has finally led to an understanding of the most important interactions of AC power and audio systems, and to identifying the most important parameters in AC current and voltage filtering. The result is the new Magnan Signature power cable design.

This revolutionary power cable dramatically improves all sonic parameters - there is much greater resolution, image focus, dynamics, weight and impact, along with a much quieter background. CD playback is most improved, due to the particular sensitivity of digital timing jitter to noise on AC power.

These qualities result from application of the same principles of high time coherence/low skin effect and mechanical micro-vibrational damping as in our other cable products. In this new design it was found to be unnecessary to incorporate additional passive EMI filtering in the cable.
In my experience, improves cd, tuner, cable box & Tv sound.

Synergistic Research Hologram D- simply amazing and plain to hear upon first listen. Closes the gap between analouge and digital.

I had big success using Stealth Dream digital version and Jorma Prime; amazing cables.

Kops, I also love the Stealth Dream series cords. However, the OP was looking for a digital power cord to "smooth things down". I would not recommend the Dream in that case. While I felt the Dream was musical, IME it was also very revealing.

Pardon me but...the question you have asked can get you in trouble !!!
A good power cord should perform well on any equipment. Any power cord which shows favoritism to any particular type of equipment or if a designer claims that way...is a flawed design to start with. Its a not a faithful cord IMO. It has flaws due to which it cannot work on certain type of equipments and if you claim those flaws would have no negative impact on certain other type of equipments (say a digital source) I would say "Whom are you fooling" !!

Friend, I would sincerely suggest you not try and find a cord which works for digital only.

I have heard the ESP Reference cord and it sounds terrific on all kinds of equipments. Its a well designed power cord...thats it !!