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Best 6922 tubes for Conrad-Johnson CT6 preamp

What would be the best sounding 6922 tubes for the CT6 Conrad-Johnson preamp ?
The unit came with Electoharmonix tubes, which I think lack in the low end. I replaced them with the Sovtek ones and I have a much better low end now (but along came microphonics..)
Has anyone tried any other 6922 tubes that give a better sound ?
gbel78
tweak1
3,661 posts
 
I just ordered some rare cryoed Russian NOS from ATSI Tubeman
tpsonic
1,092 posts
 
CJ preamps are known for being hard on their tubes.The best choice is usually going back to CJ.Had a friend buy NOS tubes for his Premier unit,all went south in the 1st week.Ended up going back to CJ and the cost was about the same as running NOS.Just a thought.
jaffeassc
166 posts
 
I just picked up a used quad of vintage steel pin Siemens ECC88's (6DJ8 equivalent) to try in my CT6. The tubes are dead quiet. They're still a little on the "warm" side like the gold pin Amperex but more transparent and more extended in the highs. I've just started listening but I think I like them better than the Amperex and they seem to complement the CJ sound better as well. Supposedly the Siemens E88CC’s (6922 equivalent) can sound even better but I think you’d be hard pressed to beat the ones I just got.
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