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(!!!!) (Best Pair #2) 6688=E180F RCA by Mullard UK gold pins 1974 (8.8ma and 9.0ma) (strong Gm)
(!!!!) (Best Pair #2) 6688=E180F RCA by Mullard UK gold pins 1974 (8.8ma and 9.0ma) (strong Gm)
$ 32.99
1 pair) 6688=E180F RCA by Mullard UK gold pins 1974
1 tube) 8.8ma Gm=14,000
1 tube) 9.0ma Gm=15,300
(recommended, best US made)
(10,000 hour 9-pin frame grid broadband Pentode, variant is 7737)
- Supratek Chenin, Cortese preamp
- Yamamoto 06-3 2010
See more: vacuum tube
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 (Best Pair #2) 6688=E180F RCA by Mullard UK gold pins 1974 (8.8ma and 9.0ma) (strong Gm) "Pin It")
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