Quote:
Originally Posted by Bombadil
I went to a radio swap meet last year where a guy was selling dozens of 27 and 56 tubes for $1 each.
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You need to be sure they test good and are not noisy.
27 has been around for almost 100 years. I'm not sure when production ceased. There are still plenty of them around. I don't find much sonic difference between different brands of ST27's.