Congrats! Good luck with the PS Audio Stellar. Darrin Myers, who designed the Stellar Phono recently left PS Audio for Parasound, great engineer, and it seems PS Audio is liquidating their stock of this preamp, and assume they have no plan to continue its development. Thus the reason to get a very good deal on it. That said, I'm sure PS Audio will stand behind it, and will gladly help you with any issues you may have.
I'm sure it will add a lot to your system.