Best 6NS7 Preamp for a Pass Labs XA25 amp

I recently purchased an Aric Audio Special all tube preamp. I am very pleased with it. I am considering the XA25 as a SS amp to replace my BEL1001 when the time comes.

Aric's preamps are all tube rectified, regulated, with 6sn7 output stage. They have variable gain, low output impedance (300 ohms), and high input impedance (100K ohms).

The Aric gear looks really choice. 
Of course,  I also nominate Supratek.

Agree Aric gear is amazing. I have an Aric Transcend 6SN7 Preamp with upgraded caps, HT bypass and ALPs volume control, up for grabs if interested.

IMO/IME the 6SN7 is one of the best tubes you can use in a line stage of a preamp!

Another recommendation for Aric Audio! I have a pair of XA60.8 and use the very first Motherlode preamp from Aric. It bests any piece I had in the system prior! Call him.