Yes, it’s quite costly. To date, this is the costliest power cable I currently own. I bought it new here on the Gon about 2 years ago. It may sound crazy but this Acrolink cord actually costs higher than the Chord QBD76 DAC that’s connected to it.
It’s a long story with this wonderful experience so I’ll try to make it short. I was happily using the 8N-PC8100 on the Chord DAC until I decided to try another DAC, the upgraditis syndrome. I bought a Luxman DA-06 DAC about 3 months ago and found the sound quality to be slightly warm and lacking in air and transparency of my reference Chord qbd76. In an attempt to salvage the Luxman by making it work, I tried a Wireworld Silver Electra 7 power cable and Platinum 8 USB on the Luxman. All these cables managed to ameliorate the weaknesses of the Luxman and bridged the performance gap with the Chord DAC.
After I switched back to the Chord QBD76, I found the sound to be almost the same as the Luxman. I was expecting the sound to be slightly improved with better air, detail and dynamics but that didn’t happen. I then removed the Wireworld power cable from the DAC and the Acrolink went back in. Damnn. It felt like I added a second subwoofer. Huge impact as the bass and mid bass was pumping like nobody’s business, and I already had a REL sub in duty. In essence, this power cable actually improved the bass quality more efficiently than the sub! This just goes to show the importance of a good power cable especially when used with sources.
I suspect the new Wireworld Platinum Starlight 8 USB has added to the improved performance of the system as well.
I do not have the privilege of trying other good power cables in various price ranges and am just sharing my experience here. In summary, my suggestion is to not neglect the cables particularly power cables on sources if your system is of certain quality. I’m fortunate that the Acrolink 8N-PC8100 has proven to be a good match to the Chord DAC in my system. It didn’t match very well with the warm sounding Luxman DAC though (I picked the WW Silver Electra 7 for the Luxman to brighten things up a little).