Telefunken E188CC Sound

I would question whether better sound after 25 hours is directly related to the tubes, or whether it is related to all the electronics warming up, and capacitors fully charging, etc. Of course, if all the gear is left on 24/7, then perhaps the 25 hours on the tubes is the cause.

No, I do not leave my tube gear on 24/7. 25 cumulative hours. I turn on my system and let it warm up for about 30 minutes with a source playing then I sat down for listening. Grant are you telling us that a New NOS tube sounds the same to you after a couple of hours burn-in than when you have accumulated , say 15 or 20 hours on it? I don't think so....

Grant are you telling us that a New NOS tube sounds the same to you after a couple of hours burn-in than when you have accumulated , say 15 or 20 hours on it? I don't think so....
Jea48 (Threads | Answers)

I don't believe I have ever owned any tubes that could be verified as new NOS (as evidenced by a seal on the tube box or the like), although I have owned many tubes that tested NOS or better, so I cannot definitively answer your question. However, all the tubes I have owned have sounded the same on the third listening session in a succession of three four hour sessions (or less). That's my experience, and it's all I can offer. If your experience is different, then I respect that...and I want to know your source for verifiable new NOS tubes. :)

I don't believe I have ever owned any tubes that could be verified as new NOS (as evidenced by a seal on the tube box or the like), although I have owned many tubes that tested NOS or better, so I cannot definitively answer your question. However, all the tubes I have owned have sounded the same on the third listening session in a succession of three four hour sessions (or less). That's my experience, and it's all I can offer. If your experience is different, then I respect that...and I want to know your source for verifiable new NOS tubes. :)

Wow Tvad, having a bad hair day? You will have to pick a fight elsewhere.
Hve you never bought a new current made tube of today? Maybe an EH, new in the box, just a few hours burn-in is all you need, the tube will sound the same after 15 or 20 hours?
You can have the final word....

Hve you never bought a new current made tube of today? Maybe an EH, new in the box, just a few hours burn-in is all you need, the tube will sound the same after 15 or 20 hours?
You can have the final word....
Jea48 (Threads | Answers)

No, I have not, and new EH tubes are not what I consider new NOS. They are new...not New Old Stock, are they not? Maybe I don't understand EH stock.

Picking a fight? C'mon, I'm answering your question as honestly as I can. I haven't owned any new NOS tubes, so I can't answer your question since I don't have experience with their burn-in characteristics. You do realize that many tube sellers grade tubes as NOS if they test new, even though they are used, right?

I said I respected your experience if it is different. What more can I say? There's no fight being picked, and my hair looks pretty good today.

Tvad,

I bet your hair rocks!!