(4) RCA made in USA 12AX7 long black plates twin triode audio tubes
$76.53 USDSold on: 2016-Dec-18
Marketplace: eBay
Detail:
Here are (4) RCA made in USA 12AX7 long black plates twin triode's that I have tested on my Heathkit TT-1 Mutual Conductance tester. The minimum for a good 12AX7 tube on this tester is 1040. They test... | Item Name | | Sold Price |
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