CJ PV-11L

mullards

beg to differ but cj supplies the east german rft types which dick olsher if fi magazine declared stands head and shoulders above the rest. I have tried these in several itterations namely cj, gold aero and from cj again and they sounded thin Grainy and bright in my system.

I dont know what the frustration is considering you sold a friend of mine tubes for his pv11 and he has been perfectly happy with them. As with any other tube preamp if you hear a whistling or tube rush if you turn the preamp on and off it usualy eliminates the problem (very much like rebooting a computer).