Stealth Dream V10 'Power' on Preamp?

Why not send it back to the seller for a refund? Stealth designs the ground path for star grounding, hence the Preamp version has the cleanest path to ground, while the amp cord has a bit more resistance, and the digital cord offers even more resistance, to keep digital garbage from entering the AC line via a ground path. Sure, the cable will work on your preamp, but not as designed. For the money that those cords cost, you should get the proper one for the proper function.

Personally, I always thought the Preamp cords were the most valuable. I would rather use a preamp cord on an amp, than an amp cord on a preamp.
If you get your whole system wired correctly, with one preamp cord on the preamp, and amp and digital cords in the appropriate spots, the star grounding principles behind Serguei's designs sound pretty impressive in action.