Quote:
Originally Posted by DRHamp
Thanks for confirming, I don't have any 12A variants yet, but will give them a try - will be hard to beat the CX-301A though.
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Be careful with the tubes with tungsten filaments. They are usually very microphonic. IMHO, it's probably best to get these old tubes from a solid dealer and avoid the auction site.
I did get a pair of NOS NU 71a's from Tube World Express and they are settling in nicely.
I have not tried the 12A varients.