Ruby EL34BHT vs Ruby EL34-CZ?

  • Thread starter Thread starter glpg80
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glpg80

glpg80

Well-known member
I need a set of the former, I keep running into sets of the latter. Anyone know the difference?
 
Bht is just the Chinese tube and Cz is the JJ made I think.
 
Do they sound the same? Or did JJ change it up?
Normally Ruby just buys tubes from manufacturers and does their testing/matching. Like GT does /did. I know the Ruby El34B was just a Chinese el34 that could be purchased anywhere.

I wouldn’t think JJ would make a special tube just for Ruby, but coukd be a possibility.
 
The BHT is Chinese, now defunct. CZ is JJ

If a seller like Ruby wants a modified version of a tube, it will get a special designation - STR - special tube request.

Like Geo said above - Ruby just tests stock and grades it slapping on their own silkscreen.
 
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