(!!!!) (Recommended Pair) 27 Philco by Sylvania NOS 1940's (5.3ma and 5.3ma)
$ 39.99
1 pair) 27 Philco by Sylvania NOS 1940's
1 tube) 5.3ma Gm=900
1 tube) 5.3ma Gm=1000
NOS mA 5.2ma+
NOS Gm 900+
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