+ 1 tvad, better to be on the safe side, if you don't have a way to check the valves. Even if you do, have a way to check valves, one mans good on EBay is another mans junk.
Matched valves with ONLY 20% left in the tank are sold all the time as matched valves. They are matched for about a year if you're lucky..
Lets just call it worn evenly.. In some cases a small valve at 50% will last some people a lifetime, others maybe just a year or two..
Ask for quiet valves.. ASK, don't assume they will be.. Don't squeeze on the 6SN7 or the 12AU7. The 12AU7 is an easy one, Telefunken or Mullard Blackburn.
6SN7, is a different story, that valve is a Jekyll and Hyde history.. BE CAREFULL and choose a good pair..
PSVANE? How are you liking that valve OP? That's another Jekyll & Hyde manufacture, you just have to listen and adjust from their..
Telefunken and Mullard are going to be your friend with PVANE, I suspect. :-)
Regards
Matched valves with ONLY 20% left in the tank are sold all the time as matched valves. They are matched for about a year if you're lucky..
Lets just call it worn evenly.. In some cases a small valve at 50% will last some people a lifetime, others maybe just a year or two..
Ask for quiet valves.. ASK, don't assume they will be.. Don't squeeze on the 6SN7 or the 12AU7. The 12AU7 is an easy one, Telefunken or Mullard Blackburn.
6SN7, is a different story, that valve is a Jekyll and Hyde history.. BE CAREFULL and choose a good pair..
PSVANE? How are you liking that valve OP? That's another Jekyll & Hyde manufacture, you just have to listen and adjust from their..
Telefunken and Mullard are going to be your friend with PVANE, I suspect. :-)
Regards