This is the Moving Magnet version (MC ones are different) and therefore is a STAGELINE N. I have had it fom new and it comes with its original box. The original instructions are also included as is the original box.
It can be powered by the 'lesser' preamps such as the NAIM NAC II2X and various NAITs but is best powered by a separate power supply such a flatcap. I did both and, yes, the flatcap made a big difference. 
As a phono stage it is stunning and really lets the music breathe. I include a red NAIM SNAIC to get you up and running but you will also need a Green one if using a stand alone power supply.
The NAIM forum is very helpful if you need more info and the companies helpline equally so. Condition is excellent and it is in full working order.