Description
JAN-6688=E180F Mullard branded Philips Holland gold pins 1966 (12.5ma)
1 tube) JAN-6688=E180F Mullard branded Philips Holland gold pins 1966
12.5ma
Gm=16,000
(10,000 hour 9-pin frame grid broadband Pentode, variant is 7737)
– Supratek Chenin, Cortese preamp
– Yamamoto 06-3 2010