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45 tube types

I'm looking at getting a 2A3/45-based amp and so, for the heck of it, I hit a couple of the online tube stores and didn't see a single one. Are there variations on the 45 tube, numbered in some other way, that I'm simply not seeing?
ballywho
isochronism
2,893 posts
 
Oops, the Cardinals are my 300B pair. My 45s are an early Wavelength Silver pair commissioned by Larry Kay. My embarrassment.:)
chadeffect
586 posts
 
Don't waste your time with all that old crap. Just get EML 45 tubes. The mesh Plate is sublime.
samsca
32 posts
 
I am using 4x Eml 45 mesh tubes in parallel on a triode labs integrated amp. 

After over 20 years of being an audiophile , I would say that these tubes are the most pure sounding tubes being made. 

Surpassed my 300b,s and all other tube systems I’ve had over the years. 

The 45 mesh is the top.
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