Description
JAN-6688=E180F Amperex NOS gold pins 1976 (13.8ma)
1 tube) JAN-6688=E180F Amperex USA gold pins NOS 1976
13.8ma
Gm=16,000
(10,000 hour 9-pin frame grid broadband Pentode, variant is 7737)
– Supratek Chenin, Cortese preamp
– Yamamoto 06-3 2010