I am on the email-me-when-they-are-in-stock list for the 274B at the Tube Store.
I settled on a 5AR4 for the CJ5. I have two other 5AR4s in the queue for the Fire Bottle. However, I just put new speaker cables in, and it might be worth waiting a few days to figure anything out.
I appreciate the suggestions! Ali Express has quite an assortment of 274B tubes. I have never used them.
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