Constant noisy tubes maybe go solid state?


I have a Quicksilver Line Stage Preamp (12AT7) mated to an Odyssey Khartago Stereo. Overall I like it. Way too much gain but I digress. Weeks after receiving it I rolled in a few different tubes, kinda fun to color the sound signature. I liked rhe RXA black plates I got and those stuck around for more than a year. They started going microphonic and making noises so I ordered another pair (noisy) then another different vendor (blasts of white noise) and another set that arrived today (one is noisy as holy hell and one seems fine).

So where does one order preamp quality tunes that are quiet? Is there something I’m not requesting when ordering? Maybe dump
snd go solid state? I’m trying to be humorous because I’m pissed. Ha.
gochurchgo
I don't understand how Mullard and RCA can sound like Solid state. These present warmth.
 It must have to do with the design of the circuit. What type of Mullard is it?
Lots of good info here.

Keep trying different tubes, might need to spend some money for better tubes,.??

Have you contacted quicksilver?.



    Agree with  1.21 gigiwatts.   
  Power amp on first off last is what I’ve always done.