Best 6922 tubes for Conrad-Johnson CT6 preamp

Thanks for NOT suggesting the tube I prefer, it only drives up the price. ))

I just ordered some rare cryoed Russian NOS from ATSI Tubeman

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.

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.