I just took a peek at their website, the Music Cord (power cord) that I saw goes for $150 USD. Their claims seem very far reaching, IMO outrageous,see below.
- Compressed Dynamic Range
- Thin, One-Dimensional Tone
- Attenuated Bass Response
- Hiss, Buzz and Noisy Backgrounds
IMO all ridiculous except possibly some rare case of buzz or noise, however, it'll usually take more than a shielded power cord to eradicate interference.
They have more claims on their page, I just can't believe any of it. If anyone really wants to buy this stuff or believe the claims, I'm not stopping them.