Replacing Sovtek 6922 for NOS

I changed the tubes in my Cary pre-amp (SLP-50B) and installed a pair of NOS Tesla/JJ 6922's purchased here on Audiogon. I was pretty upset when I blew a Sovtek 6922 that was less than a month old. The JJ's gave my pre-amp a little warmer and natural sound IMO.

A good place to begin your research is at Joe's Tube Lore. To get there, go to audioasylum.com, then to FAQ, then scroll to Joe's Tube Lore. My experience has been that the Sovtek 6922 lacks the dynamics, subtle inner detail and imaging of premium NOS tubes like the Siemens CCa/7308 or Amperex 6922PQ/6DJ8 Orange Globe Logo. Even the more modestly priced Amperex Bugle Boy/A Frame, Siemens 6922 w/gold pins and Mullard 6DJ8/6922 will offer much better sonics.

Yes, you have a whole lot of room for improvement over your Sovtek (one of the worst I've heard when comparing to some of the premium tubes that Mrwigglewm mentions). You are in luck that there are many excellent alternatives that were manufactured in that family. My preferences run towards the Siemens CCa's or the Telefunken CCa's. In my applications the former is more detailed and a bit more analytical, while the Tele seemed a bit warmer while sacraficing some detail. As with all tube recommendations (and many others in audio) YMMV. Do be careful in seeking out the premium tubes as there are also many counterfit and relabled tubes in that family. Buy from a reputible dealer and you should be fine. Check the archives here or on AudioAsylum for an abundance of further recommendations (enough to make your head spin) regarding the 6922/6dj8/E88CC family. Good luck.

Hi again Jax2. Yes, it's me again (from Portugal). I have started a new thread for a couple of reasons: first, the title of yesterday's thread was correct afterall (!): the tube family is 6922/6dj8/E88CC (and not ECC82 as I said later). Then, I asked Pathos Acoustics about the original tubes and they are Sovtek 6922. According to my readings (and thanks to you) I found out these are not so good tubes. About Portugal, I am glad you enjoyed my country. You talked about Fado and this would be a loooong conversation. One gold tip: do NOT listen to anyone besides Amália Rodrigues. Amália is what Fado is all about. Trust me.