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102L Western Electric ST-14 NOS 1957 and 1964 matched pair (0.7ma Gm=700 and 0.8ma Gm=700) 1-2% matched

$ 179.99

1 pair) 102L Western Electric ST-14 NOS 1957 and 1964, same internal build, original boxes, 1-2% matched

1 tube) 0.7ma Gm=700 (5752=1957)

1 tube) 0.8ma Gm=700 (6439=1964) slightly taller glass

 

 Matched on Amplitrex:

Vplate=130V

Vgrid=-1.5V

WE Data Sheet NOS Ma = 0.7ma

WE Data Sheet NOS Gm = 650

 

(102L=102F with lower filament current and higher Gm)
(102L=Quarter Current 102D)

 

 

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