Luxman produces power cords (jpa15000) with lean shielding and large cross section/non twisted conductors, more similar to the Oyaide Tunami GPX-R power cords (I own) than to the ones from Shunyata.
In its official japanese website Luxman says that this architecture provides a more relaxed and natural sound.
After trying different power cords (Oyaide Tunami one hand, hyper-shielded/twisted the other) I can only agree with them.
I recommend the neutral, focused and detailed (and expensive) GPX-R, while in my experience GPX provides a "punchy" sound with more enphasys on the mid-lows.
I own Audioquest Sky 72v DBS xlr interconnects and Gibraltar 72v DBS speaker cables for my Luxman D06 sacd player and 509u integrated amp with B&W 803D loudspeakers.