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(!!) 13EM7 RCA black base black plates NOS 1960's (1.1ma/37ma)

(!!) 13EM7 RCA black base black plates NOS 1960's (1.1ma/37ma)

$ 7.99

13EM7 RCA black base black plates NOS 1960's

1.1ma Gm=1500

37ma Gm=5600

 

Tested on Amplitrex

Good Ma triode #1 = 1.2-1.4ma

Good Gm triode #1 =1400-1600

 

Good Ma triode #2 = 30-40ma

Good Gm triode #2 = 5500-7000

 

 

- Modwright

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