ARC Sp8 mk2 tube suggestions


Hi there,Iam starting the new year off with a a sp8 mk2 for my reference pre (in the mail).I would appreciate tube suggestions,thankyou.The sp8 has recently had new tubes from ARC.Iam a big fan of vintage tubes,thanks again.
misternice
Thankyou.did you try 5751 inplace of the 12ax7 at all ?,Ill give it a try anyway just to know.
I think you should check with ARC on that; I think they might tell you it's not recommended - but that's just a guess