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(!!) (Single) 2A3 RCA branded CBS black plates like new 1940's (103ma) (high Gm)

(!!) (Single) 2A3 RCA branded CBS black plates like new 1940's (103ma) (high Gm)

$ 79.99
 
2A3 RCA branded CBS black plates like new 1940's - in white box

 

SINGLE TUBE, NOT A PAIR

 

Test Data: Vplate=230V, Vgrid=-30V

Iplate=103ma Gm=7350

Good NOS range 80-120ma

 

Test Data: Vplate=250V, Vgrid=-45V

Iplate=48ma Gm=5300

Good NOS range 50-60ma

Recommended for

Tektron, Melody, Bottlehead, Ming Da, Musical Paradise

 

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