Cant find much info on Art Audio Vinyl Reference Phono


I can't seem to find much info on this phono pre. I am looking to buy a phono preamp and I was offered one but not many reviews. The thing I do know about it is it uses a weird tube 6N1P? (not the common 6SN7 or 12AX7). I am currently demoing an Art Audio Vinyl One (Coincidence). Any input is appreciated.
jimbones
OK so there is a lot to like about this unit, the only thing I dont like is it is a bit hard in the upper mid/lower treble region. Not sure if there is anything I can do about that
It may need more break-in but also what cartridge are you running into it?