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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
yogiboy's avatar
yogiboy
5,764 posts
 
@ gochurchgo
I hate to burst your bubble but I think your spinnin’ your wheels. You said the problem was too much gain with the QS preamp. You are replacing the At7 with a 6201. Both of those tubes have the same gain. Good luck and all the best!
invalid
1,247 posts
 
You should clean out your tube sockets, it may have some residue in there.
gochurchgo OP
923 posts
 
@yogiboy the purpose of the thread was bad tubes. Gain is a design issue. For now good tubes are the answer until I can search more into other varieties.
jjss49's avatar
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jjss49
6,612 posts
 
@gochurchgo

an obvious point perhaps

but if your tube preamp has too much gain for your power amp then slightly noisy tubes in the pre get highlighted moreso than if the gain match were more appropriate, right?

so the issues are inter related which is why we have been talking about both - ’’component synergy is the lifeblood of a truly well performing system’’
decooney
2,219 posts
 
06-06-2018 5:23pm by Jackd
...As the Odyssey amps have low input sensitivities in the 1 volt range you need to be careful of tube preamps with high gain especially if your speakers have sensitivity ratings much over the mid-80's range.


Was member jackd on to something a few years ago, about pairing higher gain preamps with the Odyssey Khartago amp, 9th post down?

https://forum.audiogon.com/discussions/preamp-suggestions-for-hot-rodded-odyssey-khartago
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