6688=E180F Philips Miniwatt Holland SQ gold pins used/good 1966 (8.8ma)
$ 15.99
6688=E180F Philips Miniwatt Holland SQ gold pins "D" getter used/good 1966
8.8ma
Gm=11,400
(10,000 hour 9-pin frame grid broadband Pentode, variant is 7737)
- Supratek Chenin, Cortese preamp
- Yamamoto 06-3 2010
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