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(!!!) (Best Mullard Pair) 6688=6688A=E180F Mullard Philips SQ and Mullard RCA gold pins NOS 1971-1974 (11.5ma and 11.5ma)
(!!!) (Best Mullard Pair) 6688=6688A=E180F Mullard Philips SQ and Mullard RCA gold pins NOS 1971-1974 (11.5ma and 11.5ma)
$ 39.99
1 Pair) 6688=6688A=E180F Mullard branded Philips SQ gold pins NOS 1971-1974
1 tube) 11.5ma Gm=15,500 dimpled disc getter 1971
1 tube) 11.5ma Gm=15,500 hoop "O" getter 1974
(10,000 hour 9-pin frame grid broadband Pentode, variant is 7737)
- Supratek Chenin, Cortese preamp
- Yamamoto 06-3 2010
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 (Best Mullard Pair) 6688=6688A=E180F Mullard Philips SQ and Mullard RCA gold pins NOS 1971-1974 (11.5ma and 11.5ma) "Pin It")
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