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(!) (#2 13EM7 PAIR) 15EA7=13EM7 GE black base NOS same build

(!) (#2 13EM7 PAIR) 15EA7=13EM7 GE black base NOS same build

$ 0.00

Sorry, this product is sold out!

1 pair) 15EA7=13EM7 GE black base NOS 1960's - 1974

1 tube) 1.9ma/33ma Gm=2000/6000 (Zenith) 1974 - taller glass

1 tube) 2.3ma/33ma Gm=2100/5200 (Dumont) 1960's

 

Matched on Amplitrex

Good Ma triode #1 = 1.3-1.4ma

Good Gm triode #1 =1500-1600

Good Ma triode #1 = 30-40ma

Good Gm triode #1 = 5500-7000

 

- Modwright

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