So I fully retubed my 6505+ about a year and a half ago, tung-sol 12AX7 in V! and JJ 12AX7's for the rest, along with JJ 6l6GC's in the power amp...my questions are two fold:
1. When should I change my tubes for new ones? I know there is no universal time line, but how long do you guys wait before you do? How long after you install a set of tubes before you install a new set, and is it different time lines for the power amp tubes or preamp tubes? Meaning should I switch out my power amp tubes sooner than the preamp tubes, etc.?
2. I've been using JJ's, but I'm wondering if there are any other good tube manufacturers you guys can recommend, in general or specifically for the 6505+. I've heard some horror stories about JJ's, and I'm just wondering if I should try out a different brand that i might enjoy more? (I have pretty universally decided though that the Tung-Sol 12AX7 is staying in V1 )
I asked my amp tech about the latest batch of stories about JJ tubes, and his reasoning was that, due to their popularity, a lot of 'b' and 'c' stock JJ tubes are being unloaded by some companies. As long as you get them from a reputable dealer, you should be OK. According to my tech, anyways