If I were you, I would also call Kevin Deal at Upscale Audio (909-931-9686). He is a true professional that will give you excellent advise (IMHO). He has never let me down.
Re-Tubing A Sonic Frontiers Pre Amp
Has anybody had any experience re-tubing a Line One, Two or Three? If so, what kind of tubes did you use and what results did you get?