(!!!!) (Best Pair #2) 10=VT-25 SYLVANIA NOS 1940's (27.2ma and 29.4ma) (Same Gm)
$ 209.99
1 pair) 10=VT-25 SYLVANIA NOS 1940's
1 tube) 27.2ma Gm=2200 (JAN-CHS-10Y=VT-25) little extra carbon on plate - on right
1 tube) 29.4ma Gm=2200 (VT-25=10Y)
Good current range 20-30ma
Good Gm = 1800
Vplate=300V Vgrid=-15V
See more: vacuum tube
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