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Is there any difference between tubes labelled CBS/Hytron vs Hytron only?

NJAudioGuy

NJAudioGuy

AK Subscriber
Subscriber
These NOS tubes seem to still be available for the 6SN7 and the JAN 5692 variants. Some tubes are labeled CBS/Hytron and others labelled Hytron only. Are these the same?

I am looking for Schiit Freya preamp so any guidance is greatly appreciated?

DC
 
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Just a comment on my experience with a Hytron 6SN7. I have one amongst the 16 to 18 6SN7s in my tube box. Evaluated all of them in my Dennis Had Inspire SE power amp. The Hytron did okay, finishing in the middle of the pack, but I should add that only the bottom 3 were unacceptable to me. The Hytron sounded fine, good clean presentation, good detail. Going off a sample size of one, it is good tube. I liked it better than the new production Tung-Sol reissue 6SN7.

The winner of my shoot-out, to my surprise, was the early 1960s Westinghouse tall 6SN7GTB with copper rods & yellow lettering. I had two of these and they finished 1 & 2. Beautiful open, natural sound.
 
Mildly OT: Old MA company, eventually folded into Sylvania in Peabody. Sometimes I'd take a shortcut through Salem and go by their original building, a rather small brick one. You could still see the Hytron logo painted on it. Even into the early 90s Sylvania still displayed vacuum tubes in their lobby, kinda cool.​

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Tom Bombadil said:
Just a comment on my experience with a Hytron 6SN7. I have one amongst the 16 to 18 6SN7s in my tube box. Evaluated all of them in my Dennis Had Inspire SE power amp. The Hytron did okay, finishing in the middle of the pack, but I should add that only the bottom 3 were unacceptable to me. The Hytron sounded fine, good clean presentation, good detail. Going off a sample size of one, it is good tube. I liked it better than the new production Tung-Sol reissue 6SN7.

The winner of my shoot-out, to my surprise, was the early 1960s Westinghouse tall 6SN7GTB with copper rods & yellow lettering. I had two of these and they finished 1 & 2. Beautiful open, natural sound.
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I have hundreds of 6sn7 tubes because they are my favorite signal triode and those Westinghouse tall plates are keepers for me too. I won't give you guys all the ones that i like but i find that as a general rule the earlier version 6sn7 tend to be better sounding if they are not too used. So, strong or NOS of 1940s and 50s vintage tubes tend to be the better sounding ones. The Westinghouse is a pleasant exception since it is of later make than that.
 
primosounds said:
I have hundreds of 6sn7 tubes because they are my favorite signal triode and those Westinghouse tall plates are keepers for me too. I won't give you guys all the ones that i like but i find that as a general rule the earlier version 6sn7 tend to be better sounding if they are not too used. So, strong or NOS of 1940s and 50s vintage tubes tend to be the better sounding ones. The Westinghouse is a pleasant exception since it is of later make than that.
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