I recently had my Fisher X-202-B restored by Craig at NOSValves. She sounds pretty darn good. I had to replace all the original 7591 power tubes with new 7591 JJs and a pair of JJ 12AX7s in the amp/phase inverter section.
I want to experiment a little to see if I can get even better sound, particularly for my LCD-2 headphones. So, I intend on replacing four of the six 12AX7s (the two original Telefunken 12AX7s in the phono section still test good so they're staying put for now). I don't think the two 7247s have much to do with the sound and being original tubes, and testing good, I'm leaving them alone as well.
I've been looking at Northern Electric 12AX7s http://thetubestore.com/northern-electric-12ax7.html which seem to be exclusive to thetubestore.com and run $60.00/ea plus $5.00 for matched sections. Seems steep, but if they are as good as claimed, they could be worth it. Does anyone have any experience with these tubes in audio gear? My limited research shows that these are really Chinese made tubes. Seems to me I could go NOS for these prices.
My musical tastes are: classical; soundtracks; jazz, pop vocals.
All tube suggestions and recommendations are invited, particularly from those with X-202-B tube rolling experience.
Edited by Rizlaw - 7/6/11 at 4:04pm
