Can a 5z4 tube be a metal bottle?


I did a thread on some tubes unfamiliar to me and recieved great info. The 5z4 rectifier seems to come in a metal and glass bottle from what I have seen thus far. I also wanted to know if the GZ30 tube would sub for the 5Z4. As always enjoy the music.
south43

Showing 4 responses by south43

Look like my question went on deaf ears. However I did find two pics of 5Z4 tubes that are in a metal case. Quite different from the glass tubes I'm used to seeing. Now if I can find the subs to these tubes it would give me some other choices.
Rodman9999 again you come through. I have some tubes I saw on another site that I might try. One is a GE the other a RCA. The pre should be here next week. Stay tuned.
Ah the famous Mullard. I have a pair in my current pre (6922,6dj8). Very nice indeed. How common are the Mullard 5Z4 tubes Rodman99999?
Wow Rodman99999 nice links. I don't know the current brand of rectifier tube in the pre as of yet but if it's not a Mullard or GE,RCA I mentioned it's outa of there. The OD3 you advised will be ordered shortly. Thanks again : )